Question

You invested a total of $15,000 at 4 1/2% and 5% simple interest. During one year, the two accounts earned $715. How much did you invest in each account

Answer 1

amount at 4.5% ---- x
amount at 5% = 15000-x

solve for x:
.045x + .05(15000-x) = 715

Answer 2

IDK