SOLUTION: Kaufman Financial Corp. makes investments for corporate clients. It makes an investment of $3700 for one year at simple interest, yielding $297. Part of the money is invested at 7%

Question 336519: Kaufman Financial Corp. makes investments for corporate clients. It makes an investment of $3700 for one year at simple interest, yielding $297. Part of the money is invested at 7% and the rest at 9%. How much was invested?

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount invested at 7%, B the amount invested in 9%.
1.
.
.
.

2.
From eq. 1,

Substitute into eq. 2,

Then from eq. 1,

.
.
.
$1800 invested at 7% and $1900 invested at 9%.
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