📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      Working alone, ‘X’ and

      ‘Y’ can complete a work in 16 days and 10 days, respectively. They started working together but after 4 days, ‘Y’ was replaced by ‘Z’ and the work got finished in the next 4 days. Find the time taken by ‘Z’ alone to finish the whole work.
      A 38 days Correct Answer Incorrect Answer
      B 40 days Correct Answer Incorrect Answer
      C 48 days Correct Answer Incorrect Answer
      D 50 days Correct Answer Incorrect Answer

      Solution

      Let the total work be 80 units (LCM of 16 and 10).

      Combined efficiency of X and Y = 5+8=13 units/day. Work done by X and Y together in 4 days = 13×4=52 units. Remaining work = 80−52=28 units.

      Efficiency of Z = 7−5=2 units/day.

      Practice Next
      More Time and work Questions
      ask-question