Question 611700
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Let *[tex \LARGE x] represent the amount invested at 7% and then *[tex \LARGE 12000\ -\ x] must be the amount invested at 5%.


Then the amount earned on the 7% investment is *[tex \LARGE 0.07x] and the amount earned on the 5% investment is *[tex \LARGE 0.05(12000\ -\ x)].


The sum of the two is $800, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.07x\ +\ 0.05(12000\ -\ x)\ =\ 800]


Solve for *[tex \LARGE x], then calculate *[tex \LARGE 12000\ -\ x]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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