Question 844137
DIST=SPEED*TIME
165=S*T
156=(S-3)T
S=165/T
156=(165/T-3)T
156=165-3T
3T=165-156
3T=9
T=9/3
T=3 HOURS.
165=S*3
S=165/3
S=55 MPH. FOR THE FASTER TRUCK
55-3=52 MPH FOR THE SLOWER TRUCK
PROOF:
156=52*3
156=156