Amanda can run 4/5 of a mile in nine minutes express her speed as a unit rate in miles per hour

Question

9 4/5 Miles per hour
15 miles per hour
5 1/3 miles per hour
3 1/5 miles per hour

Answer 1

(4/5 mi) / 9min * 60min/hr = (4*60)/(5*9) mi/hr