document.write( "Question 881482: A car travels 180 km from A to B at 60 kph and returns from B to A along the same route at 90 kph. what is the average speed for the round trip? \n" ); document.write( "
Algebra.Com's Answer #532240 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A car travels 180 km from A to B at 60 kph and returns from B to A along the same route at 90 kph. what is the average speed for the round trip? \n" ); document.write( "-------------------- \n" ); document.write( "Average speed = (total distance)/(total time) \n" ); document.write( "----- \n" ); document.write( "total distance = 2*180 = 360 km \n" ); document.write( "total time = 180/60 + 180/90 = 3 + 2 = 5 hrs \n" ); document.write( "------ \n" ); document.write( "Average speed = 360 km/ 5 hrs = 72 kph \n" ); document.write( "--------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |