Answer:
As he is driving at spped of 45 mile per hours
This means that if he drivess for an hour he will cover 45 miles but here he only travel for 11 minute
Changing mph into mpm we get 0.75 mile per minute
Multiply 0.75 by 11
We get 8.25 mean he has moved 8.25 mile
As the total distance is 24
So subtract it 24- 8.25= 15.75
He will have to walk 15. 75miles more mean he will have to travel 21 min. More
Explanation: