Question

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?

Answer 1

1 hr = 60 min * 60 sec/min = 3600 s

73.2 s = 73.2 s / (3600 s/h) = 0.0233 hr

4mi / 0.0233 hr = 196.7 mi/h