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The average of 5 numbers is 50. If one number is removed, the average becomes 45

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What’s inside this PDF?

Question: The average of 5 numbers is 50. If one number is removed, the average becomes 45. What is the number that was removed?

Options:

  1. 55
  2. 60
  3. 65
  4. 70

Correct Answer: 55

Solution: 

Total of 5 numbers = 5 * 50 = 250. Total of 4 numbers = 4 * 45 = 180. Number removed = 250 - 180 = 70.

The average of 5 numbers is 50. If one number is removed, the average becomes 45

Practice Questions

Q1
The average of 5 numbers is 50. If one number is removed, the average becomes 45. What is the number that was removed?
  1. 55
  2. 60
  3. 65
  4. 70

Questions & Step-by-Step Solutions

The average of 5 numbers is 50. If one number is removed, the average becomes 45. What is the number that was removed?
  • Average Calculation – Understanding how to calculate the average and how it changes when numbers are added or removed.
  • Total Sum of Numbers – Calculating the total sum of a set of numbers based on their average.
  • Difference in Averages – Recognizing how the removal of a number affects the overall average.
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