Question 984401
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Let *[tex \Large x] represent the number of nickels.  Then *[tex \Large x\ -\ 12] is the number of quarters.  *[tex \Large 5x] is the value of the nickels in cents and *[tex \Large 25(x\ -\ 12)] is the value of the quarters in cents, and the total value is 540 cents, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  5x\ +\ 25(x\ -\ 12)\ =\ 540]


Solve for *[tex \Large x]


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

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