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Monday

The Simple Interest



Simple interest calculation follows the formula:

I= PRT, where
I=Interest
P=Principal
R= Interest Rate
T= Time.

The challenge: John decides to buy a car. The dealer gives him a price and tells him he can pay on time as long as he makes 36 installments and agrees to pay six per cent interest. (6%).
The facts are:
Agreed price 18,000
for the car, taxes included.
3 years or 36 equ
al payments to pay out the debt.
Interest rate of 6%.
The first payment will occur 30 days after receiving the lo
an
A simple timeline will give you an idea of the q
uestion we need to address.



To simplify the problem, we know the following:

1. The monthly payment will include at least 1/36th of the principal so we can pay off the original debt.

2. The monthly payment will also include an interest component that is equal to 1/36 of the total interest.

3. Total interest is calculated by looking at a series of varying amounts at a fixed interest rate.

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