Question 1144470
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Here is a very simple way to solve this kind of problem without algebra, by looking at how far the average return percentage is between the return percentages from the individual investments.<br>
(1) 13% is 1/3 of the way from 12% to 15%. (If it helps, picture the three percentages 12, 13, and 15, on a number line....)
(2) Therefore, 1/3 of the money should be invested at the higher rate.<br>
ANSWER: 1/3 of the $13,500, or $4500, at 15%; the other $9000 at 12%.