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    A company offers a buy 2 get 1 free scheme on pens priced at Rs. 10 each. What is the effective discount percentage?
    Question

    A company offers a buy 2 get 1 free scheme on pens priced at Rs. 10 each. What is the effective discount percentage?

    A.

    2723\frac 23​%

    B.

    2713 \frac13​ %

    C.

    3323\frac 23​%

    D.

    3313\frac 13​%

    Correct option is D

    Given:
    Price of 1 pen = ₹10
    Buy 2 pens and get 1 pen free.
    Formula Used:
    Effective Discount Percentage=(DiscountTotal Cost Without Discount)×100\text{Effective Discount Percentage} = \left( \frac{\text{Discount}}{\text{Total Cost Without Discount}} \right) \times 100​​
    Solution:
    Total cost without discount = 3 × ₹10 = ₹30
    Discount = ₹10 (1 pen free)
    Effective discount percentage =1030\frac{10}{30}​ × 100
    Effective discount percentage = 33 13\frac 13​%

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