设速度为X距离为Y 则(x+24)*5.5=y
(x-24)*6=y
x=4872 y=29088
设x人螺丝y人螺冒则
x+y=42 100x=75y解x=18 y=24
设甲共x乙共y则
x:y=2:5 x-2.5=(y-2.5)/2-2解 x=3 y=7.5
设速度为X距离为Y 则(x+24)*5.5=y
(x-24)*6=y
x=4872 y=29088
设x人螺丝y人螺冒则
x+y=42 100x=75y解x=18 y=24
设甲共x乙共y则
x:y=2:5 x-2.5=(y-2.5)/2-2解 x=3 y=7.5