A,B长72KM,甲乙从A,B相向而行,乙早出发3h,他们在2地中点相遇,甲早出发2h,他们在离B24KM相遇,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 16:53:27
![A,B长72KM,甲乙从A,B相向而行,乙早出发3h,他们在2地中点相遇,甲早出发2h,他们在离B24KM相遇,](/uploads/image/z/11984191-7-1.jpg?t=A%2CB%E9%95%BF72KM%2C%E7%94%B2%E4%B9%99%E4%BB%8EA%2CB%E7%9B%B8%E5%90%91%E8%80%8C%E8%A1%8C%2C%E4%B9%99%E6%97%A9%E5%87%BA%E5%8F%913h%2C%E4%BB%96%E4%BB%AC%E5%9C%A82%E5%9C%B0%E4%B8%AD%E7%82%B9%E7%9B%B8%E9%81%87%2C%E7%94%B2%E6%97%A9%E5%87%BA%E5%8F%912h%2C%E4%BB%96%E4%BB%AC%E5%9C%A8%E7%A6%BBB24KM%E7%9B%B8%E9%81%87%2C)
A,B长72KM,甲乙从A,B相向而行,乙早出发3h,他们在2地中点相遇,甲早出发2h,他们在离B24KM相遇,
A,B长72KM,甲乙从A,B相向而行,乙早出发3h,他们在2地中点相遇,甲早出发2h,他们在离B24KM相遇,
A,B长72KM,甲乙从A,B相向而行,乙早出发3h,他们在2地中点相遇,甲早出发2h,他们在离B24KM相遇,
设甲的速度是x(km/h),乙的速度是y(km/h).
36/x+3=36/y
48/x=24/y+2
将1/x、1/y看成未知数,解此方程.
解得1/x=1/6,1/y=1/4;
即x=6,y=4.