Question 1162620
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There was $800 of income from the 8% investment, and there was $800 of income combined from the 5% and 6% investments.<br>
$800 income from an 8% investment means the amount invested at that rate was $10,000.<br>
So the combined amounts invested in the 5% and 6% investments was $15,000.<br>
$15,000 all invested at 5% would yield $750 income; all at 6% would yield $900 income.
The actual income from those two investments, $800, is one-third of the way from $750 to $900.  That means 1/3 of the remaining $15,000 was invested at the higher rate.  So $5000 at 6% and $10,000 at 5%.<br>
ANSWER: $10,000 at 8%; $10,000 at 5%, and $5000 at 6%.<br>
CHECK:
.08(10,000)+.05(10,000)+.06(5000) = 800+500+300 = 1600<br>