The average of five numbers is 40. If one number is removed, then the average becomes 36. What is the removed number?
Show answer & explanation
Correct answer: A
Explanation
Given:
Average of 5 numbers = 40
Average after removing one number = 36
According to the formula:
Total = Average × Number
Initial Total = 5 × 40 = 200
Total of the remaining 4 numbers = 4 × 36 = 144
Removed number = 200 − 144 = 56