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    Question

    The average price of two laptops, namely 'D' and 'E' is

    Rs. 65,500 whereas the average price of laptops 'E' and 'F' is Rs. 70,000. If the average price of laptop 'D' and 'F' is Rs. 67,750, then find the price of laptop 'F'.
    A Rs.72,250 Correct Answer Incorrect Answer
    B Rs.72,500 Correct Answer Incorrect Answer
    C Rs.87,400 Correct Answer Incorrect Answer
    D Rs.52,000 Correct Answer Incorrect Answer

    Solution

    ATQ, Let the price of laptop тАШDтАЩ, тАШEтАЩ and тАШFтАЩ be Rs. тАШpтАЩ, Rs. тАШqтАЩ and Rs. тАШrтАЩ, respectively. p + q = 1,31,000 q + r = 1,40,000 r + p = 1,35,500 So, 2(p + q + r) = 4,06,500 Or, p + q + r = 2,03,250 So, price of laptop тАШrтАЩ = 2,03,250 тАУ 1,31,000 = Rs. 72,250

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