Question

Darian drove 274.5 miles in 4.5 hours. What was his average speed (mph)?

Answer 1

61 mph consistently

Explanation:

4.5/0.5 = 9 = 30 min

274.5/9 = 30.5 = speed in half an hour.

30.5 x 2 = 61 = consistent speed for an hour.