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( "
Algebra.Com's Answer #366538 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The local train is 25 miles down the track from the Central Station when the express leaves the station. \n" ); document.write( "The local train travels at a rate of 50 mi/hr and the express train travels at a rate of 80 mi/hr. \n" ); document.write( "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( "distance = 80n miles \n" ); document.write( "-------------------------------------- \n" ); document.write( "b.When will the express train catch up with the local train? \n" ); document.write( "Local train DAta: \n" ); document.write( "distance = (80n - 25) miles ; rate = 50 mph ; time = (80n-25)/50 hr \n" ); document.write( "----- \n" ); document.write( "Express train DATA: \n" ); document.write( "distance = 80n ; rate = 80 mph ; time = n hr. \n" ); document.write( "======= \n" ); document.write( "Equation: \n" ); document.write( "time = time \n" ); document.write( "n = (80n-25)/50 \n" ); document.write( "50n = 80n-25 \n" ); document.write( "30n = 25 \n" ); document.write( "n = 5/6 hrs \n" ); document.write( "n = 50 minutes \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |