Question

Darius invests $8400 in two different accounts. The first account paid 7 %, the second account paid 3 % in interest. At the end of the first year he had earned $348 in interest. How much was in each account?

Answer 1

.03x+.07(8400-x)=348

.03x+588-.07x=348

588-.04x=348

-.04x=-240

x=6000, so y=8400-x

y=2400

So Darius invested $6000 at 3% and $2400 at 7%