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一道3年級數學題,3分鐘之內答錯了,說明你的不適合玩股票

73?

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答案是73吧~
那鞋子的15
给骗子的29
15+29=44
然后要还给街坊的需要50,虽然给了骗子29, 不过我们手上还有跟街坊换来的21,所以我们只需要自己补上29就能还回街坊50了啊。
15+29+29=73!

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15

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94~~

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(assume that fake 50 is zero-value at earlier):
1.sell (give)the product - loss 15
2.exchange (borrow)from 街坊- gain 50
3.paid (give)to customer - loss 29
4.paid back to 街坊- loss 50
_______________________________________
SUM UP =loss 44

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44

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94?

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