Question

A train travels 500 miles in 8 hours. Assuming that the train continues to travel at a constant rate, write an equation that represents this situation.

Answer 1

Use the distance = rate × time formula. Let r be the speed (mph) and t the time (hours):

500 = r·8

So r = 500/8 = 62.5 mph, and the distance-time equation is d = 62.5 t (or d = r t with r = 62.5).