Answer: It will take 2.5 hours for her to walk 7.2 miles
Explanation:
Divide the total mile by the number of miles per hour
7.2/2.88=2.5
since it takes an hour walk of 2.88 miles per hour, multiply 2.5 by 1
2.5*1=2.5
It will take 2.5 hours for her to walk 7.2 miles