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    Question

    The average number of taxis of three colours (black,

    white and yellow) in a taxi stand is 140. The number of black taxis is 24 more than that of yellow taxis. The total number of black and white taxis is 280. Find the number of white taxis in a taxi stand.
    A 126 Correct Answer Incorrect Answer
    B 136 Correct Answer Incorrect Answer
    C 116 Correct Answer Incorrect Answer
    D 110 Correct Answer Incorrect Answer

    Solution

    Let the number of white taxis be ‘x’ Therefore, number of black taxis = (280 – x) Number of yellow taxis = (280 – x – 24) = (256 – x) According to the question, 256 – x + 280 – x + x = 140 × 3 Or, x = 116

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