Question 237327
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Let *[tex \Large d] represent the number of dimes


Let *[tex \Large q] represent the number of quarters


Then *[tex \Large 10d] represents the value of the dimes in cents


And *[tex \Large 25q] represents the value of the quarters in cents


Finally, the total value, $2.50, is 250 expressed in cents


So:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d\ +\ q\ =\ 13]


and


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 10d\ +\ 25q\ =\ 250]


Solve the system by substitution.  Solve the first equation for q in terms of d.  Substitute the expression for q into the second equation giving you an equation in d.  Solve for d to get your answer.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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