SOLUTION: Mr. Benstron invested $7,200, part at 8% and the rest at 10%. If the annual income from each investment was the same, what was the amount of each investment?

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Question 260854: Mr. Benstron invested $7,200, part at 8% and the rest at 10%. If the annual income from each investment was the same, what was the amount of each investment?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.Y%288%29=X%2810%29
2.X%2BY=7200
From eq. 1,
Y=5X%2F4
Substitute into eq.2,
X%2B%285%2F4%29X=7200
%289%2F4%29X=7200
X=3200
Then from eq. 1,
Y=%285%2F4%29X=4000
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$3200 at 10%, $4000 at 8%.