Cassandra is 80 years old. Last month, she broke her leg while biking with her grandchildren. She was admitted to a hospital for
2 answers:
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Answer:
r = 9.86%
Explanation:
The formula for calculating the future value of an invested amount yielding a compound interest is given by:
where:
FV = future value = $16,000
PV = present value = $10,000
r = interest rate = ?
n = number of compounding period per year = 1
t = time in years = 5
∴
dividing both sides by 10,000
to remove the power of 5, we have to take the 5th root of both sides:
Using your calculator:
1.09856 = 1 + r
∴ r = 1.09856 - 1 = 0.09856
r = 0.0986 = 9.86%
∴ r = 9.86%