document.write( "Question 738269: pipe A alone can fill a tank in 8 hours.
\n" ); document.write( "Pipe B can fill it in 6 hours.
\n" ); document.write( "If both the pipes are opened and after 2 hours pipe A is closed,then the other tank will fill the tank in how many hours?
\n" ); document.write( "please give the right answer...
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Algebra.Com's Answer #450741 by richwmiller(17219)\"\" \"About 
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a) First we need to find out how fast both pipes fill the tank.
\n" ); document.write( "b) Then we need to find out how much both pipes fill the tank in 2 hours
\n" ); document.write( "c) Then we need to find out much more needs to be filled
\n" ); document.write( "d) Then we need to find out how long pipe B will need to complete the job.
\n" ); document.write( "a) 1/8+1/6=1/x
\n" ); document.write( "x=24/7= 3 3/7=x = 3.4286 hours
\n" ); document.write( "b) after 2 hours it has done 2/(24/7) =7/12 =58.33%\r
\n" ); document.write( "\n" ); document.write( "c) leaving 5/12
\n" ); document.write( "d) 5/12 *6 =5*6/12=2.5 hours for pipe b to complete the job.
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