Question

The life expectancy of a circulating coin is

35
years. The life expectancy of a circulating dollar bill is only

StartFraction 1 Over 20

as long. Find the life expectancy of circulating paper money.

Answer 1

Calculate (1/20)(5 years): 5/20 years, or 1/4 year (3 months).

Answer 2

1.75 years or 1 year and 9 months.

Explanation:

We have been given that the life expectancy of a circulating coin is 35 years. The life expectancy of a circulating dollar bill is only 1/20 as long.

To find the life expectancy of circulating paper money, we need to calculate 1/20 of 35 years.

`\text{Life expectancy of circulating paper money}=35\text{ years}* (1)/(20)`

`\text{Life expectancy of circulating paper money}=1.75\text{ years}`

`0.75\text{ year}=0.75*\frac{\text{12 months}}{\text{year}}=\text{9 months}`

Therefore, the life expectancy of circulating paper money is 1.75 years or 1 year and 9 months.