SOLUTION: Arlene wishes to invest $5000. If she invests part at 7% simple interest, part at 6%, and receives a total of $332 after one year, how much does she invest in each rate?

Question 334801: Arlene wishes to invest $5000. If she invests part at 7% simple interest, part at 6%, and receives a total of $332 after one year, how much does she invest in each rate?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount at 7%, B the amount at 6%.
1.
.
.
.

2.
From eq. 1,

Substitute into eq. 2,

Then from eq. 1,

.
.
.
$3200 invested at 7%, $1800 invested at 6%.
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