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1. he average weight of 16 boys in a class is 25 kg and that of the remaining 8 boys is 15 kg. Find the average weights of all the boys in the class.
Answer: 48.55
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QA>he average weight of 16 boys in a class is 25 kg and that of the remaining 8 boys is 15 kg. Find the average weights of all the boys in the class.....
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MCQ>Consider the following statements associated with the laws of weights in the theory of erros : 1. If an equation is multiplied by its own weight, then the weight of the resulting equation is equal to the reciprocal of the weight of the equation. 2. The weight of the algebraic sum of two or more quantities is equal to the reciprocal of the sum of the individual weights. 3. If the quantity of a given weight is multiplied by a factor, then the weight of the result is obtained by dividing its given weight by the square root of that factor. 4. If the quantity of a given weight is divided by a factor, then the weight of the result is obtained by multiplying its given weight by the square of that factor. Of these statements :...
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MCQ>There are 50 boys in a class. Their average weight is 45 kg. When one boy leaves the class, the average reduces by 100 gms. Find the weight of the boy who left the class?...
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