document.write( "Question 345948: a train travels a certain distance taking 7 hrs in forward journey, during return yourney increased speed of 12km/hr take the time 5 hrs. What is the distance traveled? \n" ); document.write( "
Algebra.Com's Answer #247386 by mananth(16946)![]() ![]() You can put this solution on YOUR website! both ways the distance traveled is the same.\r \n" ); document.write( "\n" ); document.write( "time * speed forward = time * speed on return \n" ); document.write( "let speed while going be x mph. time = 7 hours \n" ); document.write( "return speed = x+12. time = 5 hours \n" ); document.write( "7x=(x+12)*5 \n" ); document.write( "7x=5x+60 \n" ); document.write( "7x-5x=60 \n" ); document.write( "2x=60 \n" ); document.write( "x=30 mph speed forward \n" ); document.write( "time = 7 hours \n" ); document.write( ".. \n" ); document.write( "distance = 7*30 = 210 miles \n" ); document.write( " |