You want to buy a dozen arrows for $97. You borrow $50 from your dad, $50 from your mom, and buy the arrows. They give you $3 change. You pay each back $1 and keep $1 for yourself, so you still owe each $49, for a total of $98. You only have the $1...where is the extra dollar?
Edit because I screwed up a number. oops.
Edit because I screwed up a number. oops.
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