修一条公路,第一次修全长的4分之1,第二次又修了全长的百分之15,这是时距公路中点还有6千米,
修一条公路,第一次修全长的4分之1,第二次又修了全长的百分之15,这是时距公路中点还有6千米,
这条公路全长多少千米?
这条公路全长多少千米?
数学人气:888 ℃时间:2019-12-12 22:35:56
优质解答
600/1-(4分之1+百分之15)=1000
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