document.write( "Question 463262: A runner started a course at an average speed of 6mph. Two hours later, a cyclist traveled the same course at an average speed of 12mph. How long after the runner started did the cyclist overtake the runner? \n" ); document.write( "
Algebra.Com's Answer #317421 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! A runner started a course at an average speed of 6mph. Two hours later, a cyclist traveled the same course at an average speed of 12mph. How long after the runner started did the cyclist overtake the runner? \n" ); document.write( "... \n" ); document.write( "let x=hrs cyclist takes to overtake runner \n" ); document.write( "travel time of runner=x \n" ); document.write( "travel time of cyclist=x-2 \n" ); document.write( "both runner and cyclist traveled the same distance \n" ); document.write( "distance=travel time*speed \n" ); document.write( "6x/60=12(x-2)/60 \n" ); document.write( "6x=12x-24 \n" ); document.write( "6x=24 \n" ); document.write( "6=4 hrs \n" ); document.write( "ans: \n" ); document.write( "cyclist overtook the runner in 4 hrs \n" ); document.write( " |