document.write( "Question 125952: I'm very confused on how to work this D=RT problem. The problem is as follows \"A bus leaves Miami for San Francisco traveling at a rate of 40 mph. Three hours later a car leaves Miami for San Francisco traveling at 55 mph. How far from Miama does the car overtake the bus?\r
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document.write( "My formula: 40x+55(x-3)=x
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document.write( " 40x+55x-165=x
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document.write( " 95x-165=x \r
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document.write( "I know this cannot be right, please help.. \n" );
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Algebra.Com's Answer #92311 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! This type of problem is not easy. I've struggled with some. \n" ); document.write( "My approach is to divide the distances that the 40 mi/hr bus \n" ); document.write( "covers into 2 parts. First, how far does that bus go in 3 hrs? \n" ); document.write( "I call where it is after 3 hrs the starting point. Now \n" ); document.write( "the 55 mi/hr car starts and I put a stopwatch on them both \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "In 3 hrs the 40 mi/hr bus covers \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "here are the equations \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "---------------------- \n" ); document.write( " \n" ); document.write( "Set \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "So, the 55 mi/hr car has travelled for 8 hrs when they meet \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "I hope you can follow it and I didn't get my logic twisted \n" ); document.write( "somewhere \n" ); document.write( " |