Austin invested $60,000 in an account paying an interest rate of 4.7% compounded quarterly. Assuming no deposits or withdrawals are made, how much money, to the nearest hundred dollars, would be in the account after 11 years?
Question
Austin invested $60,000 in an account paying an interest rate of 4.7% compounded quarterly. Assuming no deposits or withdrawals are made, how much money, to the nearest hundred dollars, would be in the account after 11 years?
Solution
To solve this problem, we can use the formula for compound interest, which is:
A = P (1 + r/n)^(nt)
where:
- A is the amount of money accumulated after n years, including interest.
- P is the principal amount (the initial amount of money).
- r is the annual interest rate (in decimal form, so 4.7% becomes 0.047).
- n is the number of times that interest is compounded per year.
- t is the time the money is invested for in years.
In this case, P = $60,000, r = 0.047, n = 4 (since the interest is compounded quarterly), and t = 11.
Substituting these values into the formula, we get:
A = 60000 (1 + 0.047/4)^(4*11)
Now, we just need to calculate the value of A.
A = 60000 (1 + 0.01175)^(44) A = 60000 (1.01175)^(44) A = 60000 * 1.681067
So, A ≈ $100,864.02
Rounding to the nearest hundred dollars, the amount of money in the account after 11 years would be approximately $100,900.
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