The average of a set of fifteen numbers is 12. If 7 is added to each of the numbers in the given set, then what will be the new average?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 19.
If 7 is added to each number, then the average must increase by 7.
Because, of the effect of adding or subtracting a number x to each term, then the average would increase or decrease by x respectively.