Karen is considering her winter coat options. One coast costs $300 and will last for 15 years. The other coat costs $120 and will last for five years. How much money would Karen save over 30 years by buying the more expensive cost? Let's be accurate as possible.
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First find the number of cheaper coats Karen will have to purchase over 30 years: 30 years / 5 years / coat = 6 coats. Then multiply that number by the cost of one cheaper coat to find the total cost of that option: 6 coats * $120 / coat = $720. Then find the number of more expensive coats Karen will have to purchase over 30 years: 30 years / 15 years / coat = 2 coats. Then multiply that number by the cost of one expensive coat to find the total cost of that option: 2 coats * $300 / coat = $600. Then subtract the total cost of the more expensive coats from the total cost of the less expensive coats to find the difference: $720 - $600 = $120.
The answer: 120.
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