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Q: A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in  ?

  • 1
    8 hrs
  • 2
    12 hrs
  • 3
    6 hrs
  • 4
    4 hrs
  • Show Answer
  • Workspace

Answer : 3. "6 hrs"
Explanation :

Answer: C) 6 hrs Explanation: Suppose A, B and C take x, x/2 and x/3 respectively to finish the work.  Then, (1/x + 2/x + 3/x) = 1/2  => 6/x = 1/2      => x = 12  So, B takes 6 hours to finish the work.

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