# Thread: Total Interest on loan.

1. ## Total Interest on loan.

Hi I have a math class with a horrible teacher from some country and I can't understand a word she says. Thus, I have a problem with my math homework. By the way it's not the terminology I can't understand it's the crazy accent. Anyway, The problem I have is that I need to figure out the monthly payments I need to make which I believe I already have. Then I need to figure out the total amount of interest I need to pay. Heres the info I got.

Principal Loan = $135,000 APR = 5.9% Years = 30 I believe the monthly payment is at$800.73, but I'm not complete positive on that either. Any help would be appreciated.

2. Is it simple interest or compounding?

3. Calculate the monthly payment and the total amount paid in interest for a home mortgage of $135,000 with a fixed APR of 5.9% for 30 years. That's the problem so my guess is regular interest. 4. A mortgage would suggest it is compounded. Consider$\displaystyle A = P\left( 1+\frac{R}{100}\right)^t = 135,000\left( 1+\frac{5.9}{100}\right)^{30}$divide this by the number of repayments$\displaystyle 30 \times 12\$

5. So then the answer is 381.69? That doesn't seem right.

6. Are you given any other information?

Is it compounded continuously maybe?