document.write( "Question 243143: a train leaves the station traveling west at 50 mph. One hour later a second train leaves the station traveling west on the same track traveling 65 mph. How many hours will it take the second train to crash into the back of the first train \n" ); document.write( "

Algebra.Com's Answer #178160 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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a train leaves the station traveling west at 50 mph.
\n" ); document.write( " One hour later a second train leaves the station traveling west on the same track traveling 65 mph.
\n" ); document.write( " How many hours will it take the second train to crash into the back of the first train
\n" ); document.write( ":
\n" ); document.write( "let t = travel time of the 2nd train
\n" ); document.write( "then
\n" ); document.write( "(t+1) = travel time of the 1st train
\n" ); document.write( ":
\n" ); document.write( "Essentially when the crash occurs, they will have traveled the same distance
\n" ); document.write( "write a distance equation dist = speed * time:
\n" ); document.write( ":
\n" ); document.write( "2nd train dist = 1st train dist
\n" ); document.write( "65t = 50(t+1)
\n" ); document.write( "65t = 50t + 50
\n" ); document.write( "65t - 50t = 50
\n" ); document.write( "15t = 50
\n" ); document.write( "t = $\"50%2F15\"$
\n" ); document.write( "t = 3 $\"1%2F3\"$ hrs \n" ); document.write( "

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