I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 32 mies per hour instead, then I would have arrived 28 minutes later. How many miles did I drive?
x/40 + 28 / 60 = x/32 28/60 is the fraction of an hour represented by 28 minutes
x/32 - x/40 = 28 / 60 solve for x = the number of miles
