Question

    4 boys from school A and 6 boys from school B together

    can set up an exhibition in 5 days, which 5 boys from school A and 10 boys from school C together can do in 4 days or 3 boys from school B and 4 boys from school C together can do in 10 days. Then how many boys from school A can set up the exhibition in one day?
    A 80 Correct Answer Incorrect Answer
    B 40 Correct Answer Incorrect Answer
    C 60 Correct Answer Incorrect Answer
    D 20 Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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