Average of ten positive numbers is x. If each number is increased by 10%, then x:

A. May decrease
B. Remains unchanged
C. Is increased by 10% 
D. May increase

🧠 Explanation:

If ten numbers’ average is x and each increases by 10%, the new average also increases by 10%. For example, if x = 10, each number grows by 10%, so the average becomes 11. This math concept helps students understand how percentages affect averages in data analysis.