The average of 11 results is 60 If the average of…

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The average of 11 results is 60. If the average of first six results is 58 and that of last six is 63, find the 6th result-

  1. A. 66
  2. B. 55
  3. C. 64
  4. D. 68

Answer: Option A

Here is complete explanation of The average of 11 results is 60 If the average of….

Solution(By ExamCraze Team)

The average of 11 results = 60
The total of 11 results = 60 × 11 = 660
Average of first six results = 58
Average of last six results = 63
Total of first six results = 58 × 6 = 348
Total of last six results = 63 × 6 = 378
∴ Sixth result = Total of first and last sixth results = Total of 11 results
= (348 + 378) - 660
= 726 - 660
= 66

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