February 21, 2017

Homework Help: Algebra 2

Posted by Trisan on Sunday, October 18, 2009 at 7:28pm.

Sally invested a total of $4500, some at 9% per year and the rest at 6% per year. The return from the 9% investment exceeds that from the 6% investment by $180. How much did she invest at each rate?

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