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

      Question

      A can complete a work in 10 days and B can complete the

      same work in 15 days. They work together for some days, then A leaves. B finishes the remaining work in 5 days. For how many days did A and B work together?
      A 2 days Correct Answer Incorrect Answer
      B 7 days Correct Answer Incorrect Answer
      C 4 days Correct Answer Incorrect Answer
      D 9 days Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Rate(A) = 1/10, Rate(B) = 1/15 Rate(A+B) = 1/10 + 1/15 = (3+2)/30 = 1/6 Work done by B in last 5 days = 5/15 = 1/3 So work done together = 1 − 1/3 = 2/3 Time together = (2/3) ÷ (1/6) = (2/3)×6 = 4 days

      Practice Next
      More Time and work Questions

      Relevant for Exams:

      ask-question