document.write( "Question 810727: A train leaves a station and travels north at 75KM/hr. Three hrs later a second train leaves on a parallel track and travels at 115 km/hr
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Algebra.Com's Answer #488386 by richwmiller(17219)\"\" \"About 
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115-75=40
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\n" ); document.write( "\n" ); document.write( "75*(3+x)=115x
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