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ipn [44]
4 years ago
9

If a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month, what

will the 3.35% monthly interest charge be at the end of the first month? Show your work or explain how you got your answer.
Calculate the total payback for a $3,500 loan at 8% annual interest with monthly payments for two years. Show all of your steps.

Use the formula, M = Pm(1 + m)^na/(1 + m)^na - 1, as needed.
Mathematics
1 answer:
xenn [34]4 years ago
3 0

Solution:

1.  Cost of a new Violin that is bought by the musician = $ 2900

Monthly interest charge = 3.35 %

If you will find the compound interest or simple interest for a month, they both will be same for a month.

Simple interest =

\frac{Principal \times Rate \times Time}{100}

 =\frac{2900 \times 3.35 \times 1}{ 100}\\\\ =29 \times 3.35\\\\ =97.15

Interest paid at the end of first month = $ 97.15

2. Loan Amount = $ 3,500

Annual interest = 8 %

Time period = 2 years= 24 months

As , we have to find the  total payback  for two years, at 8% annual interest with monthly payments .we will use the formula of Amount in terms of compound interest here.

Formula for Amount

Amount= Principal (1 +\frac{Rate}{100})^{time}]

          =3500 \times [(1+\frac{8}{1200})^{24}]\\\\ = 3500 \times [(1.0066)^{24}]\\\\= 3500 \times  1.1710 \\\\ =4098.58

Total payback after 2 years = $ 4098.58


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