document.write( "Question 51069: A bicyclist rode into the country for 5h. In returning, her speed was 5 mi/h faster and the trip took 4h. What was her speed each way?\r
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document.write( "R x T = D?????\r
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document.write( "I am not sure how to set this up and solve. Please help. Thank You. \n" );
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Algebra.Com's Answer #34043 by mathchemprofessor(65)![]() ![]() You can put this solution on YOUR website! Let the speed, the bicyclist rode for country in one way, be x miles per hour. \n" ); document.write( "Time taken for one way was 5 hours. \n" ); document.write( "So, the distance traveled = 5 hours*(xmph)=5x miles \n" ); document.write( "On the reurn journey, the speed was (x+5)mph \n" ); document.write( "Time taken=4hours \n" ); document.write( "So, the distance traveled on his return=4hours*(x+5)mph=4(x+5)miles. \n" ); document.write( "Since the distance traveled is the same both ways, \n" ); document.write( "5x=4(x+5) \n" ); document.write( "5x=4x+20 \n" ); document.write( "5x-4x=4x+20-4x \n" ); document.write( "x=20 \n" ); document.write( "So, the speed in one way was 20mph and on his return,(20+5=)25mph \n" ); document.write( "You can check the value of x by substituting in the equations. \n" ); document.write( "The distance traveled in each way was 100 miles. \n" ); document.write( " |