find the interest paid on loan for 2 years simple interest rate of 9% per year

http://www.ehow.com/how_2164984_calculate-simple-interest.html

You're missing an important figure.

To find the interest paid on a loan for 2 years with a simple interest rate of 9% per year, you'll need to know the principal amount borrowed. Without that information, we won't be able to calculate the interest.

Assuming you have the principal amount, the formula to calculate simple interest is:

Interest = Principal * Rate * Time

In your case, the rate is 9% per year and the time is 2 years. Let's say the principal amount is $1,000. Plugging the values into the formula, you get:

Interest = $1,000 * 0.09 * 2
Interest = $180

So, for a loan with a principal amount of $1,000, a simple interest rate of 9% per year, and a duration of 2 years, the interest paid would be $180.