Here Is The Problem.
Julia drove from her home to her aunt's house in 3 hours and 30 minutes. The distance between the houses is 175 miles. Knowing that distance = rate X time, find that car's average speed.
Answer d = 175 mph t = 3 1/2, then 175 mph = r X 3 1/2 hr. Solving for rate(r), we get r = 50 mph.
This was an example. I am looking for an explanation of how this is true.