algebra
posted by scott .
an investor invested a total of 1,600 in 2 mutual funds.One fund earned a 6% profit while the other earned a 2% profit. If the investors profit was $56, how much was invested in each mutual fund.
amount invested in mutual fund that earned 6% was___
amount invested in fund that earned 2% was
___

6% account  x
2% account  1600x
.06x + .02(1600x) = 56
.06x + 32  .02x = 56
.04x = 24
x = 24/.04 = 600
$600 at 6% and $1000 at 2% 
An investor invested a total of of $2500 in two mutual funds. One fund earned a 7% profit while the other earned a 4% profit. If the investor's total profit was $14, how much was invested in each mutual fund?

An investor invested a total of $2000 in two mutual funds. One fund earned 9% profit while the other earned a 6% profit. If the investor's total profit was $129, how much was invested in each mutual fund?