Bill drove to town hall and back. The trip there took 1.5 hours and 2hrs on trip back. If bill's speed there was 12 mph faster than on the way back , find his average speed on the way back.
Accepted Solution
A:
Answer:36 mph.Step-by-step explanation:Let x be the distance to the town hall.Trip there: speed (s) = distance / times = x / 1.5 so x = 1-5sTrip back:s - 12 = x / 2 so x = 2s - 24AS they are both = to x:1.5s = 2s - 240.5s = 24s = 48.Average speed on the way back = 48-12 = 36 mph.