一条绳子长度等于五分之四米,再加上他长度的五分之四,这条绳子长多少米?

问题描述:

一条绳子长度等于五分之四米,再加上他长度的五分之四,这条绳子长多少米?

绳子长 4/5÷(1-4/5)=4/5÷1/5=4m