document.write( "Question 1081357: A freight train and a passenger train leave a rail yard at the same time and travel on a parallel tracks. The passenger train travels 35 km per hour faster than the freight train. The combined distance traveled after 3 hours is 705 km. What is the average speed of each train? \n" ); document.write( "
Algebra.Com's Answer #695394 by josgarithmetic(39617)\"\" \"About 
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x, the speed of the freight train
\n" ); document.write( "x+35, speed of passenger train\r
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\n" ); document.write( "\n" ); document.write( "\"3x%2B3%28x%2B35%29=705\"\r
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\n" ); document.write( "\n" ); document.write( "\"6x%2B105=705\"\r
\n" ); document.write( "\n" ); document.write( "\"6x=600\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=100%29\"\r
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\n" ); document.write( "\n" ); document.write( "Passenger train's speed is 135 km/hour
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