The average of twenty positive numbers is x. If each number increases by 20%, then x will :
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. increase by 20%.
When each number in a data set increases by a fixed percentage, the average also increases by the same percentage.
So, new average = x + 20% of x = x × (1 + 0.20) = 1.2x