Maths question for you all...!

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  • scottybuzz
    Too lazy to set a custom title
    • May 2006
    • 14799
    #1

    Maths question for you all...!

    The avg. (arithmetic - mean) of a and b is ninety; the avg. (arithmetic mean) of a and c is 150; what is the total value of (b-c)/2?
    Last edited by scottybuzz; 01-18-2013, 09:16 AM.
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    Tags: None
    • Webmaster Advertising
      So Fucking Banned
      • Sep 2003
      • 1360
      #2
      Three fiddy.

        Comment

        • scottybuzz
          Too lazy to set a custom title
          • May 2006
          • 14799
          #3
          quick bitches!
          $$$$$ MAKE HUGE MONEY IN CAMS - CLICK HERE $$$$$

            Comment

            • d-null
              . . .
              • Apr 2007
              • 13724
              #4
              -60





              ...........

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                • BigBossBrother
                  Confirmed User
                  • Jun 2012
                  • 336
                  #5
                  You can't solve something like this you have one equation with two unknowns. Because arithmetic average of a and b is ((a+b)/2) and you said it's 90, but you don't know from this, what is a or b
                  And the same is is valid for c and d, of course.

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                    • StinkyPink
                      It's all goooood.
                      • Aug 2009
                      • 1591
                      #6
                      there is no D.... unless he is seeking the sum of D as to which I thought would be X

                        Comment

                        • DamianJ
                          Too lazy to set a custom title
                          • Jul 2006
                          • 15808
                          #7
                          Macs suck!

                            Comment

                            • Spunky
                              I need a beer
                              • Jun 2002
                              • 133986
                              #8
                              Math makes my brain hurt

                                Comment

                                • woj
                                  <&(©¿©)&>
                                  • Jul 2002
                                  • 47882
                                  #9
                                  you just subtract 2nd equation from the first...

                                  (a+b)/2=90
                                  (a+c)/2=150
                                  -------------------
                                  ((a+b)-(a+c))/2=90-150
                                  (a+b-a-c))/2=-60
                                  (b-c)/2=-60
                                  Last edited by woj; 01-18-2013, 10:10 AM.
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                                    • StinkyPink
                                      It's all goooood.
                                      • Aug 2009
                                      • 1591
                                      #10
                                      Originally posted by woj
                                      you just subtract 2nd equation from the first...

                                      (a+b)/2=90
                                      (a+c)/2=150
                                      -------------------
                                      (b-c)/2=-60
                                      You may be dead on, or dead wrong. I am too old to remember these equations. If I had to guess though, I would say you were RIGHT!

                                        Comment

                                        • d-null
                                          . . .
                                          • Apr 2007
                                          • 13724
                                          #11
                                          Originally posted by woj
                                          you just subtract 2nd equation from the first...

                                          (a+b)/2=90
                                          (a+c)/2=150
                                          -------------------
                                          (a+b-(a+c))/2=90-150
                                          (a+b-a-c))/2=-60
                                          (a+b-a-c))/2=-60
                                          (b-c)/2=-60
                                          this is correct, and I said it already a few posts up

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                                            Comment

                                            • BigBossBrother
                                              Confirmed User
                                              • Jun 2012
                                              • 336
                                              #12
                                              Originally posted by StinkyPink
                                              there is no D.... unless he is seeking the sum of D as to which I thought would be X
                                              Fuck, I didn't read it properly, in this case I agree with " d-null " it's -60

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                                                • Scott McD
                                                  Too lazy to set a custom title
                                                  • Nov 2002
                                                  • 67798
                                                  #13
                                                  Originally posted by Webmaster Advertising
                                                  Three fiddy.
                                                  Gets my vote...


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                                                    Comment

                                                    • woj
                                                      <&(©¿©)&>
                                                      • Jul 2002
                                                      • 47882
                                                      #14
                                                      Originally posted by d-null
                                                      this is correct, and I said it already a few posts up
                                                      solution without proof is useless...
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                                                        • PR_Glen
                                                          Confirmed User
                                                          • Oct 2006
                                                          • 9058
                                                          #15
                                                          it's whatever the rothchilds and rockefellars say it is!
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                                                            Comment

                                                            • d-null
                                                              . . .
                                                              • Apr 2007
                                                              • 13724
                                                              #16
                                                              Originally posted by woj
                                                              solution without proof is useless...
                                                              you are right, I thought it too simple to bother

                                                              a+b=180
                                                              a+c=300

                                                              a=180-b
                                                              a=300-c

                                                              180-b=300-c

                                                              -b=120-c

                                                              b=c-120

                                                              (b-c)/2


                                                              (c-120-c) /2

                                                              -60

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                                                                Comment

                                                                • pornmasta
                                                                  Too lazy to set a custom title
                                                                  • Jun 2006
                                                                  • 20019
                                                                  #17
                                                                  (a+b)/2=90
                                                                  (a+c)/2=150

                                                                  a+b=180
                                                                  a+c=300

                                                                  a=180-b
                                                                  c+180-b=300

                                                                  c-b=120
                                                                  -120=b-c
                                                                  -60=(b-c)/2

                                                                    Comment

                                                                    • StinkyPink
                                                                      It's all goooood.
                                                                      • Aug 2009
                                                                      • 1591
                                                                      #18
                                                                      Originally posted by d-null
                                                                      you are right, I thought it too simple to bother

                                                                      a+b=180
                                                                      a+c=300

                                                                      a=180-b
                                                                      a=300-c

                                                                      180-b=300-c

                                                                      -b=120-c

                                                                      b=c-120

                                                                      (b-c)/2


                                                                      (c-120-c) /2

                                                                      -60
                                                                      My math teachers would give us an F if we didn't "write it out".

                                                                      And.... wait for it.... wait for it... most of us ARE simple. lmao

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                                                                        • adultmobile
                                                                          No, I am not banned
                                                                          • Nov 2003
                                                                          • 5345
                                                                          #19
                                                                          Reading this thread I see why so many people ask to explain what is the ratio column in our affiliate report and how it is calculated.

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                                                                            • ilnjscb
                                                                              Confirmed User
                                                                              • Jun 2009
                                                                              • 8973
                                                                              #20
                                                                              (a+b)/2=90; (a+c)/2=150
                                                                              (a+b)/2=((a+c)/2)-60
                                                                              a/2 + b/2=a/2 + c/2 -60
                                                                              b/2=c/2 -60
                                                                              b/2-c/2=c/2-c/2-60
                                                                              (b-c)/2=-60

                                                                                Comment

                                                                                • SomeCreep
                                                                                  :glugglug
                                                                                  • Mar 2003
                                                                                  • 26118
                                                                                  #21
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                                                                                    • pornmasta
                                                                                      Too lazy to set a custom title
                                                                                      • Jun 2006
                                                                                      • 20019
                                                                                      #22
                                                                                      at least 5 different methods

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                                                                                        • 2MuchMark
                                                                                          Mark of 2Much.net
                                                                                          • Aug 2004
                                                                                          • 50990
                                                                                          #23

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                                                                                            • EddyTheDog
                                                                                              Just Doing My Own Thing
                                                                                              • Jan 2011
                                                                                              • 25433
                                                                                              #24
                                                                                              22.5

                                                                                              Fucked if I remember how I came to it...

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                                                                                                • pornmasta
                                                                                                  Too lazy to set a custom title
                                                                                                  • Jun 2006
                                                                                                  • 20019
                                                                                                  #25
                                                                                                  Originally posted by MarkPrince
                                                                                                  where are the bones ?

                                                                                                    Comment

                                                                                                    • EddyTheDog
                                                                                                      Just Doing My Own Thing
                                                                                                      • Jan 2011
                                                                                                      • 25433
                                                                                                      #26
                                                                                                      Originally posted by MarkPrince
                                                                                                      That's how I want to die.

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                                                                                                        • L-Pink
                                                                                                          working on my tan
                                                                                                          • Mar 2005
                                                                                                          • 39151
                                                                                                          #27
                                                                                                          Originally posted by StinkyPink
                                                                                                          You may be dead on, or dead wrong.
                                                                                                          Or in my case arithmetically challenged.

                                                                                                          .

                                                                                                            Comment

                                                                                                            • hony
                                                                                                              Confirmed User
                                                                                                              • Nov 2003
                                                                                                              • 314
                                                                                                              #28
                                                                                                              Years and years ago there was a software you could feed the two starting equations to and it would do all the steps and writing it out for you. I think it ran on my Apple ][ (yes, showing my age) - anybody remember what it was called?
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