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      Question

      Saurabh can complete a piece of work in 20 days. He

      worked for 5 days and left. Anirudh completed the remaining work in 12 days. If both of them had done the work together, the work would have been completed in how many days?
      A 8(8/9) Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 9(8/9) Correct Answer Incorrect Answer
      D 8 Correct Answer Incorrect Answer

      Solution

      Saurabh can complete a piece of work in 20 days=1 Saurabh can complete a piece of work in 1 days=1/20  After 5 days =5/20=¼ remaining work=1-¼=¾ ATQ- Anirudh ¾ =12days Anirudh can do a work =16 days so now Saurabh        Anirudh 20                 16           80 4                   5 Saurabh and Anirudh had done work complete=80/5+4 =80/9 = 889days  

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