31名同学去划船,租了4条小船和3条大船.已知每条大船比每条小船多坐1人,每条大船和每条小船各坐几人?
问题描述:
31名同学去划船,租了4条小船和3条大船.已知每条大船比每条小船多坐1人,每条大船和每条小船各坐几人?
答
设每条小船坐x人,则每条大船坐x+1人,根据题意可得方程:4x+3(x+1)=31 4x+3x+3=31 7x=28 &n...