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      Question

      Average of 5 figures is 70. When two more figures are added

      with an average of 'x', the new average increases by 10%. Find the value of 'x'.
      A 72.5 Correct Answer Incorrect Answer
      B 56.1 Correct Answer Incorrect Answer
      C 50.5 Correct Answer Incorrect Answer
      D 94.5 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Sum of 5 figures = 5 Γ— 70 = 350

      New average of all the numbers = 70 Γ— 1.1 = 77

      So, sum of 7 numbers = 77 Γ— 7 = 539

      So, average of two new figures = (539 - 350) Γ· 2 = 94.5

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