document.write( "Question 399318: Determine the speed of a motorboat in still water and the speed of the river current, if it takes 3 hours to travel a distance of 45 miles upstream and 2 hours to travel 50 miles downstream. \n" ); document.write( "
Algebra.Com's Answer #282771 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! b - c = 45/3 = 15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b + c = 50/2 = 25\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "adding equations (eliminating c) ___ 2b = 40 \n" ); document.write( " |