The average of 6 observations is 45 5 If one new…

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The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is :

  1. A. 58
  2. B. 56
  3. C. 50
  4. D. 46

Answer: Option B

Here is complete explanation of The average of 6 observations is 45 5 If one new….

Solution(By ExamCraze Team)

Let the new observation be = x
According to the question,
6 × 45.5 + x = 7 × 47
273.0 + x = 329
x = 329 - 273
x = 56

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