Derek and his father have an agreement. If Derek can save $15,000, his father will pay the balance toward a used car (up to a total of $20,000)
If Derek can save $3,800 per year, how long will it take him to reach $15,000 if he invests the money into an account earning an annual rate of 4.25%? Use a financial calculator.
What will be an ideal response?
Answer: The financial calculator makes short work of this problem.
MODE = END
INPUT ? 4.25 0 3,800 -15,000
KEY N I/Y PV PMT FV
CPT 3.726
For those who like algebra:
n = /ln(1 + r) = /ln(.0425) = 3.73 years.
Explanation: Use a financial calculator or a spreadsheet.
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