[問題] 100個大學生有99個人都會算錯的國小四年級數學題
一天有個年輕人來到王老闆的店裏買了一件禮物
這件禮物成本是18元,標價是21元.
結果是這個年輕人掏出100元要買這件禮物,
王老闆當時沒有零錢,用那100元向街坊換了100元的零錢,找給年輕人79元.
但是街坊後來發現那100元是假鈔,王老闆無奈還了街坊100元.
現在問題是:
王老闆在這次交易中到底損失了多少錢??
算錯的請把畢業證書還給高中校長.國中校長.國小校長..
答案待會公佈~~
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