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March 2, 2015

March 2, 2015

Posted by **Kim** on Tuesday, January 20, 2009 at 11:21pm.

- College math -
**Reiny**, Tuesday, January 20, 2009 at 11:30pmlet the time for the "out-trip" be t hours

then the return trip took 7-t hours

so first distance = 480t miles

return distance = 640(7-t)miles

but aren't the two distances equal ?

so solve

480t = (640(7-t)

then sub your value of t into 480t

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