document.write( "Question 611232: Two cars leave the origin; one goes north at 55 mph and the other goes south at 30 mph. After how many hours will they be 350 miles apart? \n" ); document.write( "
Algebra.Com's Answer #384862 by Alan3354(69443)\"\" \"About 
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Two cars leave the origin; one goes north at 55 mph and the other goes south at 30 mph. After how many hours will they be 350 miles apart?
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\n" ); document.write( "Going in opposite directions, the speeds are added.
\n" ); document.write( "55+30 = 85 mi/hr
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\n" ); document.write( "d = r*t
\n" ); document.write( "t = d/r
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