document.write( "Question 1127482: A long distance runner started on a course running at an average speed of 6 mph. One hour later, a second runner began the same course at an average speed of 8 mph. How long after the second runner started will the second runner overtake the first runner? \n" ); document.write( "
Algebra.Com's Answer #743931 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A long distance runner started on a course running at an average speed of 6 mph. One hour later, a second runner began the same course at an average speed of 8 mph. \n" ); document.write( " How long after the second runner started will the second runner overtake the first runner? \n" ); document.write( ": \n" ); document.write( "let t = 2nd runner's time when overtaking the 1st runner \n" ); document.write( "then \n" ); document.write( "(t+1) = 1st runner's time \n" ); document.write( ": \n" ); document.write( "When the 2nd runner catches the 1st, they will have traveled the same distance. \n" ); document.write( "write a distance equation; speed * time \n" ); document.write( "8t = 6(t+1) \n" ); document.write( "8t = 6t + 6 \n" ); document.write( "8t - 6t = 6 \n" ); document.write( "2t = 6 \n" ); document.write( "t = 6/2 \n" ); document.write( "t = 3 hrs for the 2nd runner to catch the 1st. \n" ); document.write( " |