document.write( "Question 353950: A crew of 8 can row 20 kilometers/hour in still water. The crew rows upstream and then returns to its starting point in 15 minutes. If the river is flowing at 2 kilometers/hour, how far upstream did the crew row?\r
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document.write( "Please be detailed in your answer, Thank You! \n" );
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Algebra.Com's Answer #253044 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! time = distance / rate ___ the times (up and down) sum to 1/4 hr\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "[d / (20 - 2)] + [d / (20 + 2)] = 1/4 \n" ); document.write( " |