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'.Solution
ATQ, Let the price of laptop ‘D’, ‘E’ and ‘F’ be Rs. ‘p’, Rs. ‘q’ and Rs. ‘r’, 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 ‘r’ = 2,03,250 – 1,31,000 = Rs. 72,250
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