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    A person sells his table at a profit of 1212\frac{ 1}221​​% and chair at a loss of 813 \frac{1}331​​ % but on the whole he gains Rs.25. On the other h
    Question

    A person sells his table at a profit of 1212\frac{ 1}2​% and chair at a loss of 813 \frac{1}3​ % but on the whole he gains Rs.25. On the other hand, if he sells the table at a loss of 813 \frac{1}3%and the chair at a profit of 1212\frac{ 1}2% then he neither gains nor loses. Find the cost price of the table. ​​

    A.

    Rs.380

    B.

    Rs.370

    C.

    Rs.360

    D.

    Rs.350

    Correct option is C

    Given:

    Profit on table = 1212%12\frac{1}{2}\%​​

    Loss on chair = 813%8\frac{1}{3}\%​​

    Overall gain in the first case = Rs. 25.

    In the second case, no profit or loss.

    ​Formula used:

    Profit % = ProfitCP \frac{Profit} { CP}​ × 100%

    Loss % = LossCP\frac{Loss} { CP}​ × 100%

    SP = CP (100 + P)%

    SP = CP (100 - L)%

    Solution:

    Let the CP of the table and chair be "T" and "C"

    T × 112\frac{1}{12}​ = C × (1/8)

    => TC=128\frac{T } C = \frac{12} 8​​

    => TC=32\frac{T} { C} = \frac{3} { 2}​​

    Again the CP of the table be 3x

    And chair = 2x

    3x×182x×112=253x × \frac{1}{8} - 2x × \frac{1}{12} = 25​​

    => 9x4x24\frac{9x - 4x} { 24} ​= 25

    => 5x = 24 × 25

    => x = 24 × 5 = 120 

    The CP of table = 3x = 3 × 120 = Rs. 360.

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