Question 889897
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Let *[tex \Large x] represent the amount invested at 7%.  Then, since we know the total amount invested is $6,200, the amount invested at 5.5% must be that portion of 6200 that is NOT invested at 7%, in other words *[tex \Large 6200\ -\ x].  The amount of return on the 7% investment is then *[tex \Large 0.07x] and the amount of return on the 5.5% investment is *[tex \Large 0.055(6200\ -\ x)]


The sum of these two return amounts is the total return on the investment, namely $389.  In short:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.07x\ +\ 0.055(6200\ -\ x)\ =\ 389]


Solve for *[tex \Large x], then calculate *[tex \Large 6200\ -\ x].  Check your work by making sure these two amounts add up to $6200.


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