document.write( "Question 919317: A man travels some distance at speed of 12km per hour and return at 9km per hour. if the total time taken by him is 2 hrs 20 min find the distance \n" ); document.write( "
Algebra.Com's Answer #557630 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A man travels some distance at speed of 12km per hour and return at 9km per hour. if the total time taken by him is 2 hrs 20 min find the distance \n" ); document.write( "---------- \n" ); document.write( "Avg speed for the round trip is 2*12*9/(12+9) \n" ); document.write( "Avg = 216/21 = 72/7 km/hr \n" ); document.write( "---- \n" ); document.write( "d = r*t \n" ); document.write( "d = (72/7)*(7/3) = 24 km RT \n" ); document.write( "12 km each way \n" ); document.write( "-------------------- \n" ); document.write( " \n" ); document.write( " |