Re: At the beginning of each year Jane puts $2,000 in
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28 Sep 2017, 06:31
Given the formula for the compound interest rate \(A=P(1+\frac{r}{n})^{nt}\), where P is the sum invested, A is the amount after interests, r is the interest rate and n is the number of times the interests are compounded in a year, the solution is pretty straightforward.
The interests are compounded once a year so that the formula reduces to \(A=P(1+0.06)^t\). Then, we just have to compute the amount every year, remembering of adding 2000$ at the beginning of every new year.
Thus, the first year we will have 2000(1+0.06)^1=2120
The second year we will have (2120+2000)*(1+0.06)^1=4367.2
And so on for other two years until we reach our answer, $ 9,274