Answer :
100 miles in 2 hours = 50mph
0 miles in 1 hour = 0mph
50 miles in 2 hours = 25mph
50 + 25 = 75/2 = 37.5mph
0 miles in 1 hour = 0mph
50 miles in 2 hours = 25mph
50 + 25 = 75/2 = 37.5mph