用绳子要测量一口水井深度,若把绳子折成三折来量,井外则多出5m来,若把绳子折成四折来量来,井外则多出1m的绳子,问井深和绳子各多少米?

问题描述:

用绳子要测量一口水井深度,若把绳子折成三折来量,井外则多出5m来,若把绳子折成四折来量来,井外则多出1m的绳子,问井深和绳子各多少米?

井深X米,绳长Y米,则3X+3x5=Y,4X+4x1=Y,X=11,Y=48