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    Question

    What is the difference between the sum of the number of

    red pens and the number of black pens sold by shopkeeper D and the number of black pens sold by shopkeeper A? Answer the questions based on the information given below: The table shows the sum of the number of red pens and blue pens sold, number of blue pens sold as percentage of number of red pens sold and the ratio of number of blue pens sold to the number of black pens sold respectively by 4 different shopkeepers.
    A 250 Correct Answer Incorrect Answer
    B 220 Correct Answer Incorrect Answer
    C 300 Correct Answer Incorrect Answer
    D 230 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    For shopkeeper A, Let the number of red pens sold be ‘x’. Then, the number of blue pens sold = 55% of x = 0.55x Now according to question, => x + 0.55x = 310 => x = 200 Number of red pens sold = 200 Number of blue pens sold = 0.55x = 110 Number of black pens sold = 110 × (9/11) = 90 Similarly, we can find the required data for the other shopkeeper too. Required difference = (160 + 150) – 90 = 220

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