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    A vendor bought lemons at 6 for ₹1. How many lemons must he sell for ₹1 to gain 100%?
    Question

    A vendor bought lemons at 6 for ₹1. How many lemons must he sell for ₹1 to gain 100%?

    A.

    3

    B.

    7

    C.

    4

    D.

    5

    Correct option is A

    Given:

    The vendor buys lemons at 6 for ₹1.

    The vendor wants to gain 100% profit.

    Formula Used:

    S.P. = C.P. × (1+Profit Percentage100) \left(1+\frac{\text{Profit Percentage}}{100}\right)​​

    Solution:

    Cost Price (C.P.) of 1 lemon = ₹ 16\frac{1}{6}​ per lemon

    Selling Price (S.P.) for a 100% profit:

    S.P. = 16×2=13\frac{1}{6} \times 2 = \frac{1}{3}​  per lemon

    Number of lemons to sell for ₹1 = 113=3\frac{1}{\frac 13} =3 

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