document.write( "Question 62999: A bicyclist rode into the country for 5 h. In returning, her
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document.write( "speed was 5 mi/h faster and the trip took 4 h. What was her speed each way? \n" );
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Algebra.Com's Answer #43913 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A bicyclist rode into the country for 5 h. In returning, her \n" ); document.write( "speed was 5 mi/h faster and the trip took 4 h. What was her speed each way? \n" ); document.write( ": \n" ); document.write( "Let s = initial speed, (s+5) = return speed \n" ); document.write( ": \n" ); document.write( "We know the trip there, and the trip back are equal distances: \n" ); document.write( " dist = time * speed \n" ); document.write( ": \n" ); document.write( "Dist out = Dist back \n" ); document.write( "5s = 4(s+5) \n" ); document.write( "5s = 4s + 20 \n" ); document.write( "5s - 4s = 20 \n" ); document.write( "s = 20 mph is her intital speed: \n" ); document.write( "Obviously, 25 mph is her return speed: \n" ); document.write( ": \n" ); document.write( "Check using dist: \n" ); document.write( "5(20) = 4(25) \n" ); document.write( ": \n" ); document.write( "Make sense to you?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |