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题目
Marshall had twice as many marbles ae Esther.when Esther gave him 12 of her marbles,he then hai 120 more marbles than her.how many marbles did Esther have at first

提问时间:2021-03-23

答案
原题是:已知Marshall的弹珠是Esther的两倍,若Esther给Marshall 12个弹珠,则Marshall比Esther多120个弹珠,求 刚开始的时候 Esther有几个弹珠呢?设Esther有x个 ,则Marshall有2x个,由题知,X-12=2X+12-120解得 x =96所...
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