document.write( "Question 460975: the distance from brampton to peterborough is 240 km. Chris is able to drive at an average speed of 100km/h along highway 401 and 80km/h on highway 115. If the total trip takes 2.5h, how long does he drive alog highway 115? \n" ); document.write( "
Algebra.Com's Answer #316181 by rwm(914)![]() ![]() ![]() You can put this solution on YOUR website! 100*x+80*y=240 \n" ); document.write( "x+y=2.5 \n" ); document.write( "x=2 y=.5 \n" ); document.write( "half an hour on rte 115 \n" ); document.write( " |