linear equations

Question

Jane invested her savings in two investment funds. The amount she invested in Fund A was 3 times as much as the amount she invested in Fund B. Fund A returned a 8% profit and Fund B returned a 5% profit. How much did she invest in Fund B, if the total profit from the two funds together was 3190

Answer 1

Let x = the amount invested in Fund B

Let 3x = the amount invested in Fund A

.05x + .08(3x) = 3190

.05x + .24x = 3190

.29x = 3190

x = $11,000

3x = $33,000