100÷(1+25%),
=100÷125%,
=80(元);
(120-80)÷80,
=40÷80,
=50%;
答:赚了50%.
一条围巾,如果卖100元,可赚25%,如果卖120元,可赚百分之几?
一条围巾,如果卖100元,可赚25%,如果卖120元,可赚百分之几?
数学人气:853 ℃时间:2019-10-26 04:45:40
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