document.write( "Question 439527: An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train. \n" ); document.write( "
Algebra.Com's Answer #303743 by stanbon(75887)\"\" \"About 
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An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
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\n" ); document.write( "Local Train DATA:
\n" ); document.write( "distance = 50 miles ; rate = r mph ; time = d/r = 50/r hrs.
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\n" ); document.write( "Express Train DATA:
\n" ); document.write( "distance = 50 miles ; rate = 2r mph ; time = d/r = 25/r hrs
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\n" ); document.write( "Equation:
\n" ); document.write( "time - time = 1 hr
\n" ); document.write( "50/r - 25/r = 1
\n" ); document.write( "Multiply thru by r to get:
\n" ); document.write( "25 = r
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\n" ); document.write( "Rate of the local train = 25 mph
\n" ); document.write( "Rate of the express train = 50 mph
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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