有一天，有個客人來到王老闆的店裡挑了件禮物
禮物的成本是18元，標價是21元
客人拿了張100元來買這件禮物
不過王老闆當下沒有零錢找給這位客人
只好用那張100元跟街坊換了100元的零錢，然後找給客人79元
事後街坊發現這張100元是張假鈔
王老闆很無奈，只好再還街坊100元
問：王老闆在這次交易中，損失了多少錢？
大家無聊就看看吧，不過已經看過、知道答案的先不要該
應該不會很難，但我承認我算了好幾次，還是湊不到答案的數字 = =
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◆ From: 123.193.66.22
※ 編輯: sapi 來自: 123.193.66.22 (12/12 23:49)
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