A. 12
B. 22
C. 32
D. 18
🧠 Explanation:
If the average of 5, 6, 7, and X is 10, then X is 22. Solve: (5 + 6 + 7 + X) ÷ 4 = 10, so 18 + X = 40, X = 22. This teaches students how to find missing values in averages, useful in math and data analysis.
A. 12
B. 22
C. 32
D. 18
If the average of 5, 6, 7, and X is 10, then X is 22. Solve: (5 + 6 + 7 + X) ÷ 4 = 10, so 18 + X = 40, X = 22. This teaches students how to find missing values in averages, useful in math and data analysis.
