A recently retired couple has $150,000 to invest to supplement their Social Security. They invested some of it in an account that paid 10% simple interest per year, and they invested the rest in an account that paid 5% simple interest per year. After one year, they received a total of $12,000 in interest. How much did they invest in each account?
+36916 x = 10% amount
150000-x = 5% amount
.1 * x + .05 (150 000 -x) = 12000 solve for 'x' the 10% amount , then the 5% amount = 150 000 - x
