document.write( "Question 567468: The local train is 25 miles down the track from the Central Station when the express leaves he station.The local train travels at a rate of 50 mi/hr and the express train travels at a rate of 80 mi/hr.Let n represent the number of hours since the express train left Central Station.
\n" ); document.write( "a.Write an expression that represents the express train's distance from Central Station in n hours.
\n" ); document.write( "b.When will the express train catch up with the local train? \n" ); document.write( "

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The local train is 25 miles down the track from the Central Station when the express leaves he station.The local train travels at a rate of 50 mi/hr and the express train travels at a rate of 80 mi/hr.Let n represent the number of hours since the express train left Central Station.
\n" ); document.write( "a.Write an expression that represents the express train's distance from Central Station in n hours.
\n" ); document.write( "b.When will the express train catch up with the local train?
\n" ); document.write( "**
\n" ); document.write( "n=travel time (hours) since express train left Central Station
\n" ); document.write( "distance=travel time*speed
\n" ); document.write( "a. Express train's distance from Central Station=80n
\n" ); document.write( "..
\n" ); document.write( "50n+25=80n (both trains travel the same distance)
\n" ); document.write( "30n=25
\n" ); document.write( "n=25/30=5/6 hrs
\n" ); document.write( "b.The express train catches up with the local train in 5/6 hrs or 50 minutes. \n" ); document.write( "

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