New IFSCA Phase 1 Results Out - Enroll Here for Phase 2

    Register

    Question

    A isquadrupleas efficient as B and can finish a piece of work in 39 days less than B. B can finish this work in how many days?

    A 40 days Correct Answer Incorrect Answer
    B 42 days Correct Answer Incorrect Answer
    C 52 days Correct Answer Incorrect Answer
    D 20 days Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Ratio of efficiencyof A and B = 4: 1
    A will take 1/4 of time as compared to B.
    Say, B takes 4x days and A takes x days.
    ∴ 4x – x = 39 ⇒ x = 13
    ∴ B takes 13 × 4 = 52 days to do the work.

    Practice Next