document.write( "Question 161603: Distance is 1200\r
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document.write( "The Wallaces take a trip by train and plane
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document.write( "The train is going 48 mph and takes 2 hrs longer than the plane
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document.write( "The plane is going 240 mph.\r
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document.write( "What is the total time of the trip? \r
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document.write( "I know this is a d=rt problem and I know that the train takes two hours longer. I'm just not sure how to set up the equation and is there two equations since I am solving for the entire time of the trip?\r
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document.write( "Thank you, Rose \n" );
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Algebra.Com's Answer #119085 by nerdybill(7384) You can put this solution on YOUR website! . \n" ); document.write( "Let x = time traveled by plane \n" ); document.write( "then \n" ); document.write( "2x = time traveled by train \n" ); document.write( ". \n" ); document.write( "Applying distance formula to calculate distance traveled by each: \n" ); document.write( "48(2x) + 240x = 1200 \n" ); document.write( "96x + 240x = 1200 \n" ); document.write( "336x = 1200 \n" ); document.write( "x = 3.57 hours (time traveled by plane) \n" ); document.write( ". \n" ); document.write( "2x = 2(3.57) = 7.14 hours (time traveled by train) \n" ); document.write( ". \n" ); document.write( "total time: 10.71 hours \n" ); document.write( " |