甲乙两人同时从两地相向而行,在距离中点40米处相遇,已知甲行了全程的55%.甲行了多少米?

问题描述:

甲乙两人同时从两地相向而行,在距离中点40米处相遇,已知甲行了全程的55%.甲行了多少米?

(40×2)÷[55%-(1-55%)]×55%,
=80÷[55%-45%]×55%,
=80÷10%×55%,
=800×55%,
=440(米);
答:甲行了440米.