17-33 Bay Lakes Lawn and Garden Care Company provides services for homeowners and small businesses. The firm is considering the purchase of a new fertilizer spreader at a cost of $43.50. The spreader is estimated to save 8 minutes labor for every hour it is in use. Head lawn-care specialist Ralph Medlin estimates that the expected life of the spreader is only 48 hours due to corrosion and the odds are 7 to 5 that its life will be between 42 and 54 hours. If the company pays its gardening help $12.50 an hour, what is the probability that the spreader will pay for itself before it is scrapped