设原计划每天修x米,
(20+4)x=45×20
24x=900
x=37.5
答:原计划每天修37.5米.
修一条路,每天修45米,正好20天修完,比原计划节约了4天,原计划每天修多少米?(用比例解)
修一条路,每天修45米,正好20天修完,比原计划节约了4天,原计划每天修多少米?(用比例解)
数学人气:314 ℃时间:2019-09-05 08:09:16
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