document.write( "Question 448711: homework question help\r
\n" ); document.write( "\n" ); document.write( "A barge moves 11 km/h in still water. It travels 50 km up river and 50km down river in a total of 22 h. What is the speed of the current
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Algebra.Com's Answer #316062 by jorel1380(3719)\"\" \"About 
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50/(11+c)+50/(11-c)=22
\n" ); document.write( "50(11-c)+50(11+c)=22(121-c2)
\n" ); document.write( "550-50c+550+50c=2662-22c2
\n" ); document.write( "22c2=2662-1100
\n" ); document.write( "22c2=1562
\n" ); document.write( "c2=71
\n" ); document.write( "c=√71=8.43
\n" ); document.write( "The current is 8.43 kph..
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