Mathematics · Average

The average age of 38 students is 18 years. When a teacher's age is included, the average age becomes 19 years. What is the teacher's age?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

159 years
258 years
357 years✓
456 years

Correct answer

57 years

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The average age of 38 students is 18 years. When a teacher's age is included, the average age becomes 19 years. What is the teacher's age?

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The average age of 38 students is 18 years. When a teacher's age is included, the average age becomes 19 years. What is the teacher's age?

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