水果店一天运进苹果、香蕉、梨共390千克,苹果的重量是梨的1.5倍,香蕉的重量是梨的3/4,三种水果各运进
人气:195 ℃ 时间:2019-09-03 11:29:49
解答
小学数学题,设梨的重量为x,
公式x+1.5x+3/4x=390
求出x ,3.25x=390
x=120
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