龟兔赛跑,全程2000,龟每分钟爬25米,兔每分钟跑320米,兔自以为速度快,在途中睡了一觉,结果龟到终点时,兔离终点还有400米,兔睡了几分钟?.~(Y7r3v(d1L9]7B-U'J
算式:提示;i8M*i9K'z4X7s0W/x4[-p6P5o6p-o*V1R.~(Y7r3v(d1L9]7B-U'J
答:兔睡了,q(Z3H9T1A;f分钟。.~(Y7r3v(d1L9]7B-U'J