Question 683929
speed of car A=x
speed of II car = x+10

They are moving away. so add up their speed

x+x+10=2x+10 m/h

distance = 540 m

time = 6 hours

speed = distance / time
2x+10 = 540/6

6(2x+10)=540
12x+60=540
12x=480
x=40 m/h

speed of car A = 40 m/h
speed of car II = 50 m/h