2.4÷(1-40%)×(1-62.5%)
=2.4÷0.6×0.375
=4×0.375
=1.5(吨);
答:剩下1.5吨.
一堆煤,用去它的40%,剩下2.4吨,如果用去它的62.5%,剩下多少吨?
一堆煤,用去它的40%,剩下2.4吨,如果用去它的62.5%,剩下多少吨?
数学人气:448 ℃时间:2020-06-03 15:00:14
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