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    How Much Percent Should Increase to Make a Profit of 10%? If

    By selling an item for Rs. 640 shopkeeper makes a loss of 20 %, By what percent should he increase his selling price so as to make a profit of 10%?

    1. 35%
    2. 36.75%
    3. 37.5%
    4. 32.25%
    Asked by Abdul Salam on 6th August 2015 in Maths.
    1 Answers
    Professor

    Answer: (3) 37.5 %

    Explanation:-
    The selling price of an item = Rs.640
    Loss = 20 %

    Then, the cost price of an item = 640 x 100/80
    = Rs.800

    If, hr makes profit 10 %,
    Then, the selling  price of an item = 800 x 110/100
    = Rs.880
    Increased the selling price = 880 – 640
    = Rs.240

    Percentage of increase  selling price = 240  x 100/640
    = 24 x 100 /64
    = 3 x 100/8
    = 3 x 25 /2
    =  37.5 %

    Hence, the answer is (3) 37.5%.

    Answered by Anurag Mishra on 7th August 2015..