用一条绳子测桥长,量14次,则绳子少3米,量16次,绳子余5米,绳子长多少米?桥长几米?
问题描述:
用一条绳子测桥长,量14次,则绳子少3米,量16次,绳子余5米,绳子长多少米?桥长几米?
答
设绳子长x米.根据题意可得:14x+3=16x-5.运算后得:x=4(米)
绳子长4(米).
桥长:14*4+3=59(米)或16*4-5=59(米)