document.write( "Question 704397: A train leaves and travels north at 85 km per hour. Another train leaves at the same time and travels S at 55 km per hour. How long will it take before they are 560 km apart? \n" ); document.write( "
Algebra.Com's Answer #434064 by Stitch(470)\"\" \"About 
You can put this solution on YOUR website!
\"560+=+85X+%2B+55X\" The two distances are added together since they are the distance of each train to the starting point.
\n" ); document.write( "Combine like terms
\n" ); document.write( "\"560+=+140X\"
\n" ); document.write( "Divide both sides by 140
\n" ); document.write( "\"highlight%284+=+X%29\"
\n" ); document.write( "In 4 hours the trains will be 560km apart.
\n" ); document.write( "
\n" );