A tricky second-grade math problem, supposedly 99 out of 100 people get it wrong.
Xiao Zhang is a shoe shop owner. He buys a pair of shoes for 20 yuan and sells it for 30 yuan. A customer gave him 50 yuan, but Xiao Zhang didn't have change, so he took that 50 yuan to a neighbor to exchange for five 10-yuan bills and gave the customer 20 yuan in change. Later, the neighbor found that the 50 yuan was counterfeit, so Xiao Zhang had to compensate the neighbor 50 yuan. How much did Xiao Zhang lose in total?
Replies (31)
Well, exchanged 50 yuan, he gave 20 yuan, kept 30 yuan for himself, although he lost 50, the actual loss was 20 yuan! The shoes cost 20 yuan, lost 20 yuan! Altogether 40 yuan!
12th floor, note that it was counterfeit money, so there was no 10 yuan gained! \ In addition, he added 20 yuan, leaving 30 yuan! The actual loss is 20 yuan, not 50 yuan; the 20 yuan loss is within that 50 yuan!
It's ninety yuan! (For those who think otherwise, go back to elementary school and study six more years)
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