Algebra 7th grade mathematics

Question

A circular running track is 1/4 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is elena’s running speed. Include the unit of mesure

Answer 1

1/4 mile per 1/20 of an hour

= 20(1/4) = 5 mph = average walking speed, not running

3 minutes for a 1/4 mile

12 minutes for 1 mile

1 mile a minute = 60 mph

60/12 = 5 mph