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?
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?

Updated On: Oct 14, 2024
  • 13 years
  • 14 years
  • 15 years
  • 16 years
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The Correct Option is C

Solution and Explanation

Number Of girls =4
Age of three of them are 8, 12 and 13
Let the age of last girl be XX
Therefore
33+X=4833+X=48
therefore
X=15 YearsX=15 \text{ Years}
the age of last girl is 15 years
The correct answer is (C): 15 years

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