You take out two loans. After 2 years, the total interest for the loans is $138. On the first loan, you pay 7.5% simple annual interest on a principal of $800. On the second loan, you pay 3% simple annual interest. What is the principal for the second loan?

1 answer

800 * .075 * 2 + x * .03 * 2 = 138
120 + .06x = 138
.06x = 18
x = 300