## Algebra 1: Common Core (15th Edition)

Recall, I=Prt, where I is interest, P is the principle (the amount of money invested), r is the rate (which equals the original percentage divided by 100) and t is the time, in years. (Note, we call x the percent interest needed, which is what we want to find. $95=(1500)(x/100)(1)$ $\\\\ 95=15x \\\\x=6.333$ 6.333% is what the student needs the interest to be.