document.write( "Question 832052: Two trains leave Cleveland at the same time. One train travels east and the other travels west. The speed of the westbound train is 3 mph greater than the speed of the eastbound train. After 3.5 hours they are 640.5 miles apart. Find the rate of each train. Assume that the trains travel in a straight line in directly opposite directions. \n" ); document.write( "
Algebra.Com's Answer #501818 by JulietG(1812)\"\" \"About 
You can put this solution on YOUR website!
I don't blame them for trying to get out of Cleveland!
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\n" ); document.write( "Let E be eastbound and W be westbound.
\n" ); document.write( "Here's the information you're given in the question:
\n" ); document.write( "3.5E + 3.5W = 640.5
\n" ); document.write( "W = E + 3
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\n" ); document.write( "Since you know the value of W, substitute it into the first equation.
\n" ); document.write( "3.5E +3.5(E+3) = 640.5
\n" ); document.write( "Distribute
\n" ); document.write( "3.5E +3.5E+ 10.5 = 640.5
\n" ); document.write( "Add the Es
\n" ); document.write( "7E + 10.5 = 640.5
\n" ); document.write( "Subtract 10.5 from each side
\n" ); document.write( "7E = 630
\n" ); document.write( "Divide each side by 7
\n" ); document.write( "E = 90
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\n" ); document.write( "If E = 90, then W = 93.
\n" ); document.write( ".
\n" ); document.write( "Let's put it back into the question to make certain it's correct.
\n" ); document.write( "In 3.5 hours, E travels 315 miles
\n" ); document.write( "In 3.5 hours, W travels 325.5 miles
\n" ); document.write( "Added together, they travel 640.5 miles
\n" ); document.write( "Success! \n" ); document.write( "
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