document.write( "Question 581785: IT took 3 hours to row a boat 18 km against the current. The return trip with the current took1 1/2 hours. Find the speed of the rowboat in still water. \n" ); document.write( "
Algebra.Com's Answer #371821 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! IT took 3 hours to row a boat 18 km against the current. The return trip with the current took1 1/2 hours. Find the speed of the rowboat in still water. \n" ); document.write( "------------- \n" ); document.write( "18/3 = 6 km/hr \n" ); document.write( "18/1.5 = 12 km/hr \n" ); document.write( "-------------- \n" ); document.write( "The boat's speed is the avg = (6 + 12)/2 \n" ); document.write( "= 9 km/hr \n" ); document.write( " \n" ); document.write( " |