The average of five numbers is 32. If one number is removed, then the average becomes 28. What is the removed number?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 48.
The average of five numbers = 32
so
Sum of 5 numbers = 32 × 5 = 160
The average of the remaining four numbers = 28
so
Sum of 4 numbers = 28 × 4 = 112
Removed number = 160 − 112 = 48