document.write( "Question 498568: In a bicycle race, Lionel gives Robert a 500 km advantage. Also, Lionel agrees to start 15 minutes after Robert. If Lionel bikes at 17 km/h and Robert at 14 km/h, how long will it take Lionel after he starts biking to overtake Robert? \n" ); document.write( "
Algebra.Com's Answer #337275 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! a bicycle race, Lionel gives Robert a 500 km advantage. \n" ); document.write( "Also, Lionel agrees to start 15 minutes after Robert. \n" ); document.write( " If Lionel bikes at 17 km/h and Robert at 14 km/h, how long will it take Lionel \n" ); document.write( " after he starts biking to overtake Robert? \n" ); document.write( ": \n" ); document.write( "I am going to go out on a limb here and say that you meant a 500 meter head-start. \n" ); document.write( ": \n" ); document.write( "Change 15 min to .25 hr \n" ); document.write( "Change 500 meter so .5 km \n" ); document.write( ": \n" ); document.write( "Let t = L's travel time to catch R \n" ); document.write( "then \n" ); document.write( "(t+.25) = R's travel time when he is caught \n" ); document.write( ": \n" ); document.write( "L has to travel .5 km further than R \n" ); document.write( ": \n" ); document.write( "Write a distance equation, dist = speed * time \n" ); document.write( ": \n" ); document.write( "17t = 14(t+.25) + .5 \n" ); document.write( "17t = 14t + 3.5 + .5 \n" ); document.write( "17t - 14t = 3.5 + .5 \n" ); document.write( "3t = 4 \n" ); document.write( "t = \n" ); document.write( "t = 1 hr 20 min for L to catch R \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Confirm this by finding the actual distance each traveled \n" ); document.write( "17(1.33) = 22.6 km \n" ); document.write( ": \n" ); document.write( "14(1.33+.25) \n" ); document.write( "14(1.58) = 22.1 km, .5 km less than Lionel \n" ); document.write( " \n" ); document.write( " |