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

      Question

      Binny is 20% more efficient than

      Ankush, while Ankush is 50% more efficient than Raju. If the three of them—Ankush, Binny, and Raju—working together can finish a task in 45 days, how many days will Binny need to complete 72% of the same task on his own?
      A 65.9 days Correct Answer Incorrect Answer
      B 22.5 days Correct Answer Incorrect Answer
      C 77.4 days Correct Answer Incorrect Answer
      D 89.5 days Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let efficiency of Raju is 10x units per day Efficiency of Ankush = 1.5 × 10x = 15x units per day Efficiency of Binny = 1.2 × 15x = 18x units per day Total work = (10x + 15x + 18x) × 45 = 43x × 45 units Time taken by Binny alone = (0.72 × 43x × 45)/18x = 77.4 day

      Practice Next
      More Time and work Questions

      Relevant for Exams:

      ask-question