Question 26422
If we let x = amount invested at 5% and x+500 = the amount invested at 7%, we can write and solve the following equation:
5%x + 7%(x+500) = $515.


5%x + 7%(x+500) = $515
0.05x + 0.07x + 35 = 515
0.12x = 515 - 35 = 480
x = 480/0.12 = 4000



x = $4000
x+500 = $4500