1. The problem statement, all variables and given/known data theres a motorist that travels 30 miles at 60 mph, and another 60 miles at 30 mph. 2. Relevant equations 3. The attempt at a solution The average speed of the motorist is 36 mph how was this computed? i know avg speed is distance / chng of time however 30+ 60 divided by 60 + 30 is not 36. need help.