甲乙共修一条路,甲每天修A米,乙每天修B米,13天修完路长多少米?

问题描述:

甲乙共修一条路,甲每天修A米,乙每天修B米,13天修完路长多少米?

甲乙共修一条路,甲每天修A米,乙每天修B米,13天修完路长13(A+B)米