document.write( "Question 1020780: Sophie travels to work by diesel train
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document.write( "The diesel train takes 81 minutes to do the journey.
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document.write( "Sophie sees an advert for a new high speed train
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document.write( "The advert says it will reduce her journey time by at least 32 minutes
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document.write( "The speed of the high speed train is 225kph
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document.write( "The speed of the diesel train is 125kph
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document.write( "Sophie uses this rule to check the advert\r
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document.write( " HT=dt
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document.write( "H= speed of the high speed train in Kph
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document.write( "D= speed of the diesel train in kph
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document.write( "T=time the journey takes in minutes using the High speed train
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document.write( "T=time the journey takes in minutes using the diesel train
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Algebra.Com's Answer #648831 by jorel555(1290)![]() ![]() ![]() You can put this solution on YOUR website! 81/60=1.35 hours by diesel \n" ); document.write( "1.35 x 125=168.75 kilometers traveled. \n" ); document.write( "168.75/225=.75 hours=45 minutes by high speed \n" ); document.write( "81-32=49 minutes most time allowed according to advertisement. \n" ); document.write( "You can also use the ratio of the trains speeds to measure the time saved: \n" ); document.write( "125/225 x 81 minutes=45 minutes traveling time \n" ); document.write( "81-45=36 minutes saved!!!!!!! \n" ); document.write( " \n" ); document.write( " |