The average of five n

Question

The average of five numbers id 27. If one number is excluded, the average becomes 25. What is the excluded number?

Options:

A . 30

B . 40

C . 32.5

D . 35

Answer: Option D

Answer : Option D

Explanation :

$MF#%\text{Sum of 5 numbers = }5 \times 27 \\\\
\text{Sum of 4 numbers after excluding one number = }4 \times 25\\\\
\text{Excluded number = }5 \times 27 - 4 \times 25 = 135- 100 = 35$MF#%

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