document.write( "Question 298727: Jim drove his truck 500 kilometers in the same time that Ed drove his truck 450 kilometers. Jim drove 5 kilometers an hour faster than Ed. Find the speed of each man. \n" ); document.write( "
Algebra.Com's Answer #214934 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Jim drove his truck 500 kilometers in the same time that Ed drove his truck 450 kilometers. \n" ); document.write( " Jim drove 5 kilometers an hour faster than Ed. Find the speed of each man. \n" ); document.write( ": \n" ); document.write( "Let s = Ed's speed \n" ); document.write( "then \n" ); document.write( "(s+5) = Jim's speed \n" ); document.write( ": \n" ); document.write( "Write a time equation; Time = dist/speed \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Cross multiply \n" ); document.write( "500s = 450(s+5) \n" ); document.write( ": \n" ); document.write( "500s = 450s + 2250 \n" ); document.write( ": \n" ); document.write( "500s - 450s = 2250 \n" ); document.write( ": \n" ); document.write( "50s = 2250 \n" ); document.write( "s = \n" ); document.write( "s = 45 mph is Ed's speed \n" ); document.write( "and \n" ); document.write( "45 + 5 = 50 mph is Jim's speed \n" ); document.write( ": \n" ); document.write( "; \n" ); document.write( "Check solutions by finding the times \n" ); document.write( "500/50 = 10 hrs \n" ); document.write( "450/45 = 10 hrs \n" ); document.write( " |