Towne Station is saving money to build a new loading platform. Three years ago, they set aside $23,000 for this purpose. Today, that account is worth $31,406. What rate of interest is Towne Station earning on this investment?

Interest rate = 10.94%

Explanation:

The future value is the estimated worth of an investment at a specified time assuming a particular interest rate. The present value is the initial amount invested.

For Towne station the future value of their investment is $31,406, and three years ago they put in $23,000.

To get the interest rate we will use the following formula

Future value = Present value * { (1 + interest rate) ^number of years}

31,406 = 23,000 * { (1+Interest rate) ^3}

Interest rate = 0.1094~10.94%