document.write( "Question 854518: two trains leave from a train station at the same time in the same direction. Train A is traveling at 50mph and train B is traveling at 70mph. What's the expression to figure out the distance between the two trains at any given time \n" ); document.write( "

Algebra.Com's Answer #514746 by josmiceli(19441) $\"\"$ $\"About$

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Relative to the slower train, the faster train is
\n" ); document.write( "constantly increasing it's lead by the difference
\n" ); document.write( "in their speeds
\n" ); document.write( " $\"+70+-+50+=+20+\"$
\n" ); document.write( "Let $\"+d+\"$ = the distance between them
\n" ); document.write( "Let $\"+t+\"$ = the time in hours after they leave the station
\n" ); document.write( "------------------------
\n" ); document.write( " $\"+d+=+20t+\"$
\n" ); document.write( " \n" ); document.write( "

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