Question
The cost of diamond varies directly as the square of its
weight. A diamond broke into four pieces with weights in the ratio 1 : 4 : 5 : 6. if the loss in the total value of the diamond was Rs. 89,000. The price of the original diamond was?Solution
Let the weight of the pieces of diamond be x, 4x, 5x, 6x Total weight of diamond = x + 4x + 5x + 6x = 16x Price = k(weight) 2 where, K is constant Original price = k(16x) 2 Price of pieces = (kx 2 + 16kx 2 + 25kx 2 + 36kx 2 ) = 78kx 2 Loss in price = 256kx 2 - 78kx 2 = 178kx 2 which is given as 89,000 = 178kx 2 = 89000 = kx 2 = 500 Original price = 256kx 2 = 256 x 500 = 128000
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Which class of seed is exempted from certification?
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 Biological oxidation of elemental Sulphur is carried out by which of the following bacteria?
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Which term describes the resistance of soil at different moisture levels to mechanical stresses or manipulations?
