Multiple choice

The average of five numbers is 27. If a number is removed from this list then average becomes 25. What is the removed number?

  1. 25

  2. 27

  3. 30

  4. 35
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D Correct answer
Explanation

Average of 5 numbers is 27, so their sum is 27×5=135. When one number is removed, average of 4 numbers is 25, so their sum is 25×4=100. The removed number = 135 - 100 = 35.

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