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

      Question

      ‘X’ and ‘Y’ together can complete a work in 16

      days, while ‘Y’ and ‘Z’ together can complete the work in 10 days. If ‘Y’ takes 20 days to complete the work alone then find the time taken by all three together to complete 45% of work.
      A 3 days Correct Answer Incorrect Answer
      B 7 days Correct Answer Incorrect Answer
      C 9 days Correct Answer Incorrect Answer
      D 5 days Correct Answer Incorrect Answer
      E 4 days Correct Answer Incorrect Answer

      Solution

      Let the total work = 80 units Efficiency of (X + Y) = 80/16 = 5 units/day Efficiency of (Y + Z) = 80/10 = 8 units/day Efficiency of ‘Y’ = 80/20 = 4 units/day Efficiency of (X + Y + Z) = (1 + 4 + 4) = 9 units/day Required time taken = (0.45 × 80)/9 = 4 days

      Practice Next
      More Time and work Questions
      ask-question