Brain Teaser #1.5
 

3 guys rent a hotel room (I like it already!) for $30. After
they leave, the manager of the hotel realizes that she has overcharged
them. The room costs only $25. "Oh no!" she exclaims, "I have
overcharged them!" She promptly gives the bell hop the 5 bucks and tells
him to give it back to the guys. "Man, 3 guys and 5 bucks! How can I
possibly divide this equally without the use of multivariable calculas or
a powerful scientific solar powered calculator!" Thinking quickly, he
pockets 2 dollars and gives each of the guys 1 dollar back.
The guys renting the hotel room think something's fishy. If they
each payed $9 for a total of $27, and the bell hop kept $2, where is the
extra dollar? ($9x3=$27, $27+2=$29 -- where be the extra dollar!)

don't all try and guess at it at once now

they didn't pay $9 each they paid $9.3333 each........

$25 (room rate) + $2 (what the bellboy kept) = $27
$27 + $3 (the change the three guys received) = $30.

it's only in the formulation...
They gave her 30$..it was 25$..so she took 5$...gave them a dollar each (3$)...and she kept 2$....(3+2=5....5+25 =30....) there you have it....:glugglug

Dude, if they rented the hotel room for $30, they didn't pay $9 each. They paid $10 each.

Your doing the math wrong..

edit.. ok posted a little late

:helpme

:glugglug

They got 1$ back, remember?

" If they each payed $9 for a total of $27, and the bell hop kept $2, where is the extra dollar? ($9x3=$27, $27+2=$29 -- where be the extra dollar!)"

You should be saying, they payed a total of $27 and the bell hop kept $2, making $25 wich is what the manager kept.

$9x3=$27, $27-$2 = $25