Question 223246
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You have the right idea.  


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d\ =\ rt]


so for the trip west:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d\ =\ 12.5r]


and for the trip east:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d\ =\ 13.5(r - 4)]


Now since we can be pretty certain that neither New York or Cincinnati picked up and moved while this trip was occurring, we can say that the distance from New York to Cincinnati is the same as the distance from Cincinnati to New York.  Now we can write:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 12.5r\ =\ 13.5(r-4)]


Solve for *[tex \Large r] then multiply by 12.5 to get *[tex \Large d]



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