John invested his savings in two investment funds. The $12,000 that he invested in Fund A returned a 3% profit. The amount that he invested in Fund B returned a 10% profit. How much did he invest in Fund B, if both funds together returned a 6% profit?

Answer 1

if there is x at 10%, the remainder (12000-x) is at 3%. So, add up the interest:

.10x + .03(12000-x) = .06(12000)

Answer 2

5400

Answer 3

16000