Question

Mary runs in the Chicago marathon and it takes her 5 hours to complete it. Write a

or unit rate that could describe Mary's run if a marathon is 26.2 miles long.

Answer 1

If you want to keep it technical, the normal “/unit rate” for running is minutes per mile. You can use dimensional analysis like I did below to find the answer. You should get 11.45 min/mile or about 11 min 25 sec per mile