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or even simpler:
- the neighboor did not gain anything nor lost anything, because he got his money back from the vendor (neighboor = 0)
-the buyer got 15 rupels and a cap while he had nothing to start with (if we consider fake money nothing) (buyer = +15 and a cap)
so with simple maths, vendor = -15 and a cap
So, nothing is lost and nothing is gained according to some physics law, so the vendor lost 15 rupels plus a cap... otherwise where would that additional 25 rupels would have disappeared?
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The wiseman owns little but knows much, while the fool knows little but owns much
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