The average of twelve numbers is 25. If each number is added by 6, then the new average will be:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 31.
Sum of 12 numbers = 25 × 12 = 300
New number to be added = 6 × 12 = 72
Now new sum = 300 + 72 = 372
New average = 372/12 = 31