A loan of $990 was repaid at the end of 6 months with a check for 1015. What annual interest was charged
![A loan of 990 was repaid at the end of 6 months with a check for 1015 What annual interest was charged class=](https://us-static.z-dn.net/files/d2d/8b62f77244348dea901920cfa67fde40.png)
The answer is .42%
Explained
I / PT = R
I = The amount of interest paid
P = The amount paid before adding interest
T = The time (weeks, months, years)
R = Interest Rate (must move 2 decimal place to the right)