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      Question

      A batsman scores 87 runs in the 21st match of his

      career. His average runs per match increases by 2. What was his average before the 21st match.
      A 45 Correct Answer Incorrect Answer
      B 46 Correct Answer Incorrect Answer
      C 44 Correct Answer Incorrect Answer
      D 43 Correct Answer Incorrect Answer

      Solution

      Sum of scores till 20 matches=S average of 20 matches=x S=20x (S+87)/21 =x+2 20x+87=21x+42 X = 45

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