Question 378666
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Remember: Distance equals rate times time.  But that means time equals distance divided by rate.  We are given the rates and we want the times to be equal.  So Jenny's race is described by:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ t\ =\ \frac{d\ -\ 20}{1.5}]


And Wendy's race is described by:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ t\ =\ \frac{d}{2}]


And since for a tie we want Jenny's time and Wendy's time to be equal, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{d\ -\ 20}{1.5}\ =\ \frac{d}{2}]


And solve for *[tex \Large d]


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