Mathematics · Average

The average age of 25 students and their principal is 15 years. When the principal's age is excluded, the average age decreases by 1 year. What is the age of the principal?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

138 years
239 years
340 years✓
441 years

Correct answer

40 years

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The average age of 25 students and their principal is 15 years. When the principal's age is excluded, the average age decreases by 1 year. What is the age of the principal?

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The average age of 25 students and their principal is 15 years. When the principal's age is excluded, the average age decreases by 1 year. What is the age of the principal?

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