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17 August, 10:36

The life expectancy of a circulating coin is 25 years. The life expectancy of a circulating dollar bill is only 1/20 as long. Find the life expectancy of circulating paper money

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  1. 17 August, 10:55
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    This problem can be solved easily by multiplying the time of the life expectancy of the coin with the fraction 1/20. The solution is as follows:

    Life expectancy of circulating paper money = 25 years * 1/20

    Life expectancy of circulating paper money = 1.25 years or 1 and 1/4 years
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