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Discussion

  1. The marked price of an article is increased by 25% and the selling price is increased by 16.66%, then the amount of profit doubles. If the original marked price be Rs. 400 which is greater then the corresponding cost price by 33.33%, what is the increased selling price ?
    1. 240
    2. 360
    3. 420
    4. 600
  1. Correct Option: C

    Initially :
    CP = 100
    Profit = x
    SP = 100 + x
    MP = 133.33

    After change
    CP = 100
    Profit = 2x
    SP = [7(100 + x)]/6


    Now , since (100 + x) 7/6 - 100 = 2x
    ⇒ x = 20%
    CP = 100
    Profit = 20
    SP = 120
    MP = 133.33

    so when CP = 300
    Selling price = 300 + 20% = 360.

    After change
    So when CP = 300
    Selling price = 300 + 2 x 20% of 300 = 420

    So the increased selling price = Rs. 420

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