Question

Paul drove from his house to work at an average speed of 40 miles per hour. The drive took him 15 minutes. If the drive home took him 20 minutes and he used the same route in reverse, what was his average speed going home?

Answer 1

First we find the distance which is : 40*15/60 = 10 miles
The average speed for the route in reverse would be 10/20*60 = 30 miles per hour.