An investment earning simple interest rate of 1.10% per annum for a term of 5 years earned 82.50 in interest. What was the principal?

oh sry i forgot to ask these questions.. to help you answer this one its a long one

1.calculate the final value after 10 years if you invest 5000.0 at 2.5% compounded annualy

2.Calculate the amount of interest earned in 10 years on 1000.00 invested at 3.00% per annum, compounded monthly

3.calculate the interest due on the following credit card balanced

a)an unpaid balance of 1629.53 at a rate of 19.50% for 21 days

b) an unpaid balance of 2639.99 at a rate of 22.95% for 30 days.

I got $87.04

I got a headache

To find the principal, we need to use the formula for simple interest:

Simple Interest = (Principal * Rate * Time) / 100

In this case, we know that the simple interest is 82.50, the rate is 1.10%, and the time is 5 years. Let's substitute the values into the formula and solve for the principal.

82.50 = (Principal * 1.10 * 5) / 100

To isolate the Principal, we can rearrange the equation:

Principal = (82.50 * 100) / (1.10 * 5)

Principal = 1500

Therefore, the principal is $1500.