OpenStudy (anonymous):

Two investments were made totaling $15,000. For a certain year these investments yielded $1432 in simple interest. Part of the $15,000 was invested at 9% and part at 10%. Find the amount invested at each rate. Right now I have: a + b = $15,000, I'm not sure how to set up the other equation.

4 years ago
OpenStudy (anonymous):

it should be... a * .09 + b * .1 = 1432

4 years ago