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      Question

      Five friends each contributed Rs. 70. If the sixth

      friend gives Rs. 50 more than the average contribution of all six, how much did the sixth friend contribute?
      A 180 Correct Answer Incorrect Answer
      B 168 Correct Answer Incorrect Answer
      C 130 Correct Answer Incorrect Answer
      D 118 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let the contribution of the sixth friend be Rs. 'p'. So, (70 × 5 + p) ÷ 6 + 50 = p Or, (350 + p) ÷ 6 = p - 50 Or, 350 + p = 6 × (p - 50) Or, 350 + p = 6p - 300 Or, 5p = 650 Or, p = 130

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