Algebra
posted by Sydnee .
An investment adviser invested $14,000 in two accounts. One investment earned 5% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $540. How much was invested in each account?

amount invested at 5%  x
amount invested at 2.5%  14000x
solve for x
.05x + .025(14000x) = 540