Mathematics · Averages
The average age of a class of 40 students is 12 years. If the teacher's age is also included, the average increases by 1 year. Find the age of the teacher.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 159 years
- 253 years✓
- 345 years
- 458 years
Correct answer
53 years
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