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      Question

      The average marks obtained by 6 students in a class is

      60. If the topper leaves, the average drops to 55. Find the marks of the topper.
      A 80 Correct Answer Incorrect Answer
      B 85 Correct Answer Incorrect Answer
      C 90 Correct Answer Incorrect Answer
      D 95 Correct Answer Incorrect Answer

      Solution

      Let the marks of the student who left be β€˜x’. So, x + (60 – 5) Γ— 5 = 6 Γ— 60 x + 55 Γ— 5 = 360 x + 275 = 360 x = 360 – 275 x = 85 So, marks of the topper were 85.

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