Question 988120
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*[tex \Large P] dollars is invested.  *[tex \Large x] at *[tex \Large r_1] rate of interest and the rest at *[tex \Large r_2] rate of interest.  A total of *[tex \Large I] dollars interest was earned.  Determine the amounts invested at each rate.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ r_1x\ +\ r_2(P\ -\ x)\ =\ I]


Solve for *[tex \Large x] then calculate *[tex \Large P\ -\ x]


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

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \