小王从A城骑自行车到B城,每时行16KM.回时乘车,每时行40KM.乘车比骑车少用1.8小时,两城距多少千米?

1个回答

  • 设骑车用时x,乘车用时x-1.8

    16x = (x-1.8)×40

    16x = 40x - 72

    24x = 72

    x = 3

    两城距离 = 3×16 = 48km