SOLUTION: Kevin invested part of his 10,000 bonus in a certificate of deposit that paid 6% annual simple interest, and the remainder in a mutual fund the paid 11% annual simple interest. if

Question 433227: Kevin invested part of his 10,000 bonus in a certificate of deposit that paid 6% annual simple interest, and the remainder in a mutual fund the paid 11% annual simple interest. if his total interest for the year was 800, how much did kevin invest in the mutual fund?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
x + y=10000
.06x + .11y=800
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Multiply the second equation by 100:
6x+11y=80000
6x+6y =60000
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5y=20000
y=4000
x=6000
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Kevin invested $6000 in a CD, and $4000 in a mutual fund.
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