A landscaper uses a mower to cut a rectangular 75-foot by 140-foot lawn. The swath he cuts is 24 inches wide, but he overlaps each cut by 3 inches to make sure that no grass is missed. He walks at the rate of 4500 feet per hour while pushing the mower. Which of the following is closest to the number of hours it will take the landscaper to mow the lawn?
1.2
1.25
1.33
1.4
1.5