甲乙丙三个修路队共同修完一条公路
- 时间:2020-05-16 11:04:24
- 分类:数学世界
- 阅读:162 次
数学题:甲乙丙三个修路队共同修完一条公路。甲队说完成了全部任务的一半,乙队修了120米,丙队比乙队多修了50%,这条公路长多少米?
数学题解答:
先算出丙队修了多少米?120×(1+50%)=180(米)
再算出乙丙两队一共修多少米?120+180=300(米)
乙丙两队修的占这条公路的几分之几?1 - 1/2 =1/2
这条公路的长是多少米?300 ÷ 1/2 =300(米)
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