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The average of 5 numbers is 42. When one number is removed, the average of the remaining numbers becomes 40. Find the number that was removed.

Competition practiceAverages & Ages
  • A50
  • B48
  • C46
  • D52

Step-by-Step Solution

Total of 5 numbers = 210; total of 4 numbers = 160; removed number = 210 - 160 = 50.
Answer: A) 50

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