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Advanced Algebra Help!

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Newton uses a credit card with a 18.6% APR, compunded monthly, to pay for a cruise totaling $1,920.96. He can pay $720 per month on the card. What will the total cost of this purchase be?

 

~Thanks in advance
asked Apr 5 in BASIC MATH by BleepBloop Rookie
reshown Apr 5 by bradely

1 Answer

0 votes

The APR is 18.6%. This means that every month, 18.6 รท 12 = 1.55%
We can solve the total cost with a simple amortization:
Balance after Month 1: 1920.96 * 1.0155 = 1950.74
Payment of 720 reduces the balance , 1950.74 - 720= 1230.74
Balance after Month 2: 1230.74 * 1.0155 = 1249.81
Payment of 720 reduces the balance, 1249.81 - 720 = 529.81
Balance after Month 3: 529.81 * 1.0155 = 538.02
Payment of 538.02 settle the payment.

Newton paid 720 in month 1, 720 in month 2, and settled the debt in month 3 with a payment of 538.02
His total payment is 720 + 720 + 538.02 = 1978.02

answered Apr 6 by johnkelly Apprentice

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