document.write( "Question 351889: A slow train travelling at 25 km/h leaves a station 1/2 h before another train travelling at 40 km/h. If the trains travel in the same direction on parallel routes, when does the faster train pass the slower train? What would x represent and what would y represent? \n" ); document.write( "
Algebra.Com's Answer #251427 by stanbon(75887)\"\" \"About 
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A slow train traveling at 25 km/h leaves a station 1/2 h before another train traveling at 40 km/h. If the trains travel in the same direction on parallel routes, when does the faster train pass the slower train? What would x represent and what would y represent?
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\n" ); document.write( "Faster train DATA:
\n" ); document.write( "rate = 40 km/h ; time = x-1/2 hrs ; distance = 40(x-(1/2)) = 40x-20 km
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\n" ); document.write( "Slower train DATA:
\n" ); document.write( "rate = 25 km/h ; time = x hrs ; distance = 25x km
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\n" ); document.write( "Equation:
\n" ); document.write( "distance = distance
\n" ); document.write( "40x-20 = 25x
\n" ); document.write( "Subtract 25x from both sides.
\n" ); document.write( "Add 20 to both sides.
\n" ); document.write( "15x = 20
\n" ); document.write( "x = 4/3 hour = 80 minutes (time for the slower train)
\n" ); document.write( "x-(1/2) = 4/3-(1/2) = (8-3)/6 = 5/6 = 50 minutes (time for the faster train)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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