Question 198990
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Let *[tex \Large d] be the distance driven in town.  Let *[tex \Large t] be the time driven in town.  Then *[tex \Large 80 - d] is the distance driven on the freeway, and *[tex \Large 2 - t] is the time driven on the freeway.


The trip through town:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d = 35t]


The trip on the freeway:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 80 - d = 70(2 - t)]


But since *[tex \Large d = 35t] we can say:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 80 - 35t = 70(2 - t)]


Solve for *[tex \Large t]


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