Question

The average of 9 numbers is 56. When one number is removed, the average becomes 54. What number was removed?

• A. 72
• B. 82
• C. 27
• D. 18

Answer 1

Answer:

A. 72

Given:

• Average of 9 numbers = 56

• Average of remaining 8 numbers = 54

Step 1: Find the total of 9 numbers

$9 \times 56 = 504$

Step 2: Find the total of the remaining 8 numbers

$8 \times 54 = 432$

Step 3: Find the removed number

$504 - 432 = 72$

Answer:

$\boxed{72}$