document.write( "Question 828035: A rower travels upstream at 6 km per hour and back to the starting place at 10 km per hour. the total journey takes 48 minutes. How far upstream did the rower go?
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Algebra.Com's Answer #498987 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A rower travels upstream at 6 km per hour and back to the starting place at 10 km per hour. the total journey takes 48 minutes. How far upstream did the rower go? \n" ); document.write( "============ \n" ); document.write( "Avg speed for the round trip is \n" ); document.write( "2*6*10/(6+10) = 7.5 km/hr \n" ); document.write( "d = r*t \n" ); document.write( "d = 7.5*48/60) = 6 km round trip \n" ); document.write( "--> 3 km each way \n" ); document.write( "------------------- \n" ); document.write( "I can show the derivation of the RT avg speed if necessary. \n" ); document.write( " \n" ); document.write( " |