Maria has a total of $12,000 invested in two funds. The first fund pays simple interest at 6% per year and the other pays simple interest at 7% per year. If the funds earn a combined $817 in interest in one year, how much does she have invested in each fund?

Answer 1

let a = 1st , and b = other

a + b = 12000

.06 a + .07 b = 817

solve the system