X/60 -2=X/75
X=600 kilometers
2 set up the original x people in the second workshop.
200-20=X+20
X= 160 people
3. The bus travels x kilometers per hour, and the truck travels X-6 kilometers.
3X+(X-6)x3=360
6X=378
X=63
63-6=57
Suppose the Xiao Fang family saves X yuan every month,
X+3.5X=2400+2 100
X= 1000
1000x3.5=3500 yuan