Question

My city wants to replace a fence around the city baseball field property, including the parking lot. The city learns that the total distance around the property is 1/12 of a mile. They already have enough fencing to cover 3/4 of a mile. How much more distance of fencing would they need to purchase?

Answer 1

They need 0 miles — they already have more than enough.
Difference = 3/4 − 1/12 = 9/12 − 1/12 = 8/12 = 2/3 mile extra.