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    Question

    A and B together can finish a job in 20 days. B and C

    together can finish the same job in 30 days. If A and C together can finish it in 24 days, then how many days can A alone finish the job?
    A 35(2/7) days Correct Answer Incorrect Answer
    B 37(1/7) days Correct Answer Incorrect Answer
    C 36(2/7) days Correct Answer Incorrect Answer
    D 38(1/7) days Correct Answer Incorrect Answer

    Solution

    ATQ,

    We’re given: A + B = 1/20 B + C = 1/30 A + C = 1/24 Add all three So, Subtract (B + C = 1/30):  or 36(2/7) days

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