New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The ratio between the number of books and pencils is 8:6

    and the ratio of cost of per book and pencil is 3:2 then find the percentage by which total cost of book is greater than the total cost of pencil.
    A 92% Correct Answer Incorrect Answer
    B 60% Correct Answer Incorrect Answer
    C 100% Correct Answer Incorrect Answer
    D 80% Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Number = books: Pencil = 8x : 6x Cost = books: pencil = 3y : 2y Total cost = books: Pencil = 24xy : 12xy Required % = [(24xy-12xy)/12xy] × 100 = 100%

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