丽丽家上个月用电80度,本月比上月节约了10度,比上月节约了百分之几?3Q
丽丽家上个月用电80度,本月比上月节约了10度,比上月节约了百分之几?3Q
数学人气:860 ℃时间:2019-09-23 14:58:59
优质解答
10/80=12.5%
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