Asked by Emilio

You need to borrow $20,000 to buy a car. You can only afford to make monthly payments of $200. The bank offers 3 choices: 3-year loan at 5%, 4-year loan at 6%, and a 5-year loan at 7%.
a) What’s the monthly payment for each loan?
b) Which loan is best for your situation?
c) What’s the total amount you would pay over the term of each loan?

Answers

Answered by Reiny
I will assume that the rates are per annum compounded monthly

Choice #1:
i = .05/12 , n = 36
P(1 - 1.0041666..^-36)/.0041666..=20000
P = 599.42 ---- can't afford that

Choice #2
i = .06/12 , n = 48
P(1 - 1.005^-48)/.005 = 20000
P = 469.70 ---- still can't afford it

choice #3
i = .07/12 = .0058333... , n = 60
P(1 - 1.0058333..^-60)/.0058333 = 20000
P = 396.02

Well , it looks like you can't afford that car.
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