- A45
- B46
- C48
- D50
Step-by-Step Solution
Sum of students' ages = . New total for 31 people = . Teacher's age = 496 − 450 = 46.
Answer: B) 46
The average age of 30 students is 15 years. When the teacher's age is included, the average increases by 1 year. What is the teacher's age (in years)?
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