依依服装店某一天将两件不同的衣服均以每件120元出售,结果一件赚20%,另一件赔20%,那么商店老板是赚了,还是亏了?赚(亏)了多少元?
人气:450 ℃ 时间:2019-10-10 05:16:39
解答
120÷(1+20%),
=120÷120%,
=100(元);
赚了:120-100=20(元);
120÷(1-20%),
=120÷80%,
=150(元),
亏了:150-120=30(元);
30>20;
30-20=10(元),
答:这家商店卖出这两件商品亏了,亏了10元.
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