Question

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 25 miles per hour instead, then I would have arrived 45 minutes later. How many miles did I drive?

Answer 1

40t = 25(t + .75)

40t = 25t + 18.75

15t = 18.75

t = 1.25 hours

(40 miles/hour)(1.25 hours) = 50 miles