SOLUTION: mary invests $24,000 in two seperate accounts. one earns 6% simple interest and the other 9%. if she earned a total of $1740, how much did she invest at each rte?

Question 160297: mary invests $24,000 in two seperate accounts. one earns 6% simple interest and the other 9%. if she earned a total of $1740, how much did she invest at each rte?
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

Let "x", amount invested at 9%. So "24000-x" is the amount inv. at 6%.
Putting into eqn:
working eqn

--------------> amt invested at 9%
-----> amt invested at 6%
check via working eqn:

Thank you,
Jojo
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