一堆煤,計(jì)劃用煤250噸,實(shí)際用煤100噸,實(shí)際比計(jì)劃節(jié)約百分之幾
一堆煤,計(jì)劃用煤250噸,實(shí)際用煤100噸,實(shí)際比計(jì)劃節(jié)約百分之幾
數(shù)學(xué)人氣:311 ℃時(shí)間:2020-04-20 21:25:57
優(yōu)質(zhì)解答
(250-100)/250=60%
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