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      Question

      There are 4 teammates: P, Q, R, and S. The average of

      their weights is 82 kg. The average weight of P, R, and S is 80 kg. If the average weight of Q and S is 85 kg, find the weight of S.
      A 82 kg Correct Answer Incorrect Answer
      B 72 kg Correct Answer Incorrect Answer
      C 55 kg Correct Answer Incorrect Answer
      D 48 kg Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Sum of weights of P, Q, R, and S = 82 × 4 = 328 kg Sum of weights of P, R, and S = 80 × 3 = 240 kg So, weight of Q = 328 − 240 = 88 kg Sum of weights of Q and S = 85 × 2 = 170 kg So, weight of S = 170 − 88 = 82 kg

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