Mathematics · Average
The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and that of the last five is 10 years. What is the teacher's age?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 136 years
- 234 years✓
- 330 years
- 428 years
Correct answer
34 years
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