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You are here: Home » GMAT Test Prep Questions » Mean, Median, Deviation » Question 5

GMAT Problem Solving Questions Answers : Arithmetic Mean

The question for the day is a Math question from the topic Arithmetic Mean.

Question 5

The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?
  1. 4
  2. 5
  3. 3
  4. 3.5
  5. 0.5
The correct choice is (C) and the correct answer is 3

Explanatory Answer

The average of 5 quantities is 6.

Therefore, the sum of the 5 quantities is 5 * 6 = 30.

The average of three of these 5 quantities is 8.

Therefore, the sum of these three quantities = 3 * 8 = 24

The sum of the remaining two quantities = 30 - 24 = 6.

Average of these two quantities = 6/2 = 3.



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