Answer:
18 times
Step-by-step explanation:
Length of driveway = 1/12 miles
Daily goal = 1 1/2 miles
Number of times he has to run the length of the driveway:
Daily Goal / length of driveway
= 3/2 miles ÷ 1/12 miles
= 3/2 * 12 / 1
= 36 /2
= 18
18 times