Question 1152475
x equals the amount of money he has invested at 5%.
2x + 500 equals the amount of money he has invested at 7%.
.05x + .07 * (2x + 500) = 187
simplify to get:
.05x + .14x + 35 = 187
combine like terms and subtract 35 from both sides of the equation to get:
.19x = 152
solve for x to get:
x = 800
2x + 500 = 2100
.05 * 800 + .07 * 2100 = 187
this confirms the value for x is good.
your solution is:
he has 800 invested at 5% and 2100 invested at 7%.