我们刚刚学习了除数是两位数的除法,它在相遇问题中可是大有用武之地呢。不信你看——相遇问题A:两列火车,一列车长140米,每秒钟行20米;另一列车长175米,每秒钟行15米。两车相向而行,从车头相遇到车尾离开需要几秒钟? We have just learned how to divide a divisor by two digits, but it is very useful in encountering problems. Do not believe you see - encounter problem A: two trains, a train 140 meters long, 20 meters per second; another train 175 meters, 15 meters per second line. Two cars in the opposite direction, from the front to the rear of the car to leave a few seconds?