Question
Download Solution PDFAverage of 15 numbers is 53. A number if removed, the average of 14 numbers becomes 55. Which number is removed?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Average of 15 numbers = 53
After removing one number, the average of 14 numbers = 55
Formula Used:
Sum of all numbers = Average × Total numbers
Removed number = Sum of 15 numbers - Sum of 14 numbers
Calculation:
Sum of 15 numbers = 53 × 15
⇒ Sum of 15 numbers = 795
Sum of 14 numbers = 55 × 14
⇒ Sum of 14 numbers = 770
Removed number = 795 - 770
⇒ Removed number = 25
The removed number is 25.
Last updated on Jul 11, 2025
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