The average of 5 quantities is The average of 3 of them is What is the average of the remaining two numbers?

A    6.5

B    4

C    3

D    3.5

Solution

Correct Answer: Option C

 

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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