Question

The average age of four girls is 12 years. The ages of three of them are 8, 12, and 13. What is the age of the fourth girl?

• A. 13 years
• B. 14 years
• C. 15 years
• D. 16 years

Answer 1

The Correct Option is C

Number Of girls =4
Age of three of them are 8, 12 and 13
Let the age of last girl be \(X\)
Therefore
\(33+X=48\)
therefore
\(X=15 \text{ Years}\)
the age of last girl is 15 years
The correct answer is (C): 15 years