SOLUTION: Walt made an extra $5000 last year from a part-time job. He invested part of the money at 6% and the rest at 8%. He made a total of $380 in interest. How much was invested at 8%?

SOLUTION: Walt made an extra $5000 last year from a part-time job. He invested part of the money at 6% and the rest at 8%. He made a total of $380 in interest. How much was invested at 8%?

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Question 1053577: Walt made an extra $5000 last year from a part-time job. He invested part of the money at 6% and the rest at 8%. He made a total of $380 in interest. How much was invested at 8%?
Answer by jorel555(1290) (Show Source): You can put this solution on YOUR website!
Let n be the amount invested at 8%. Then:
.08n+.06(5000-n)=380
8n+6(5000-n)=38000
2n=8000
n=4000
$4000 was invested at 8%, $1000 was invested at 6%. ☺☺☺☺
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