The average of 15 papers is 50. The average of the first 8 papers is 48 and of the last eight papers is 54. Find the marks obtained in the 8th paper.

  • A. 66
  • B. 64
  • C. 58
  • D. 56
 

The correct answer is option A. 66. Can you explain this answer in the comments?


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The average of 15 papers is 50. The average of the first 8 papers is 48 and of the last eight papers is 54. Find the marks obtained in the 8th paper.