document.write( "Question 192875: An express train and a local train both leave Gray’s Lake at 12:00 noon and head for Chicago 60 miles away. The express travels twice as fast as the local and arrives 2 hours ahead of it. Find the speed of each train. \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #144774 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
An express train and a local train both leave Gray’s Lake at 12:00 noon and head for Chicago 60 miles away. The express travels twice as fast as the local and arrives 2 hours ahead of it. Find the speed of each train.
\n" ); document.write( "-------------------------
\n" ); document.write( "Express DATA:
\n" ); document.write( "distance = 60 miles ; rate = 2x mph ; time = d/r = 60/2x = 30/x hr.
\n" ); document.write( "------------------------
\n" ); document.write( "Local DATA:
\n" ); document.write( "distance = 60 miles ; rate = x mph ; time = 60/x hr.
\n" ); document.write( "------------------------
\n" ); document.write( "Equation:
\n" ); document.write( "local train time - express train time = 2 hrs
\n" ); document.write( "60/x - 30/x = 2
\n" ); document.write( "60 - 30 = 2x
\n" ); document.write( "2x = 30
\n" ); document.write( "x = 15 mph (local train speed)
\n" ); document.write( "2x = 30 mph (express train speed)
\n" ); document.write( "=====================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
\n" );