Question 347671
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Solve the formula for *[tex \Large r]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ S\ =\ C\ +\ rC]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ S\ =\ C(1\ +\ r)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 1\ +\ r\ =\ \frac{S}{C}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ r\ =\ \frac{S}{C}\ -\ 1]


Now all you need to do is plug in the sale price and cost values and do the arithmetic.


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