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A Can Do A Piece Of Work In 4 Hours . A And C Together Can Do It In Just 2 Hours, While B And C Together Need 3 Hours To Finish The Same Work. B Alone Can Complete The Work In --- Hours. |
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Answer» Work DONE by A in 1 hour = 1/4 Work done by B and C in 1 hour = 1/3 Work done by A and C in 1 hour = 1/2 Work done by A,B and C in 1 hour = 1/4+1/3 = 7/12 Work done by B in 1 hour = 7/12 – 1/2 = 1/12 => B alone can COMPLETE the work in 12 hours. Work done by A in 1 hour = 1/4 Work done by B and C in 1 hour = 1/3 Work done by A and C in 1 hour = 1/2 Work done by A,B and C in 1 hour = 1/4+1/3 = 7/12 Work done by B in 1 hour = 7/12 – 1/2 = 1/12 => B alone can complete the work in 12 hours. |
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