Question 517192
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Let *[tex \Large x] represent the amount invested at 10.5% and then *[tex \Large x\ +\ 4000] is them amount invested at 7.5%.


The amount of return on the 10.5% investment is then *[tex \Large 0.105x] and the return on the 7.5% investment is *[tex \Large 0.075(x\ +\ 4000)]


Then the 10.5% investment earnings plus $75 is the same as the 7.5% investment.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 0.105x\ +\ 75\ =\ 0.075(x\ +\ 4000)]


Solve for *[tex \Large x], then calculate *[tex \Large x\ +\ 4000]


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