The average age of a child in a class of 30 is 10. the average age incluiding teacher is 11. How old is the teacher
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Answer:
41 years (HOPE IT HELPS YOU!)
Step-by-step explanation:
Sum of ages of 30 students= no.of students ×avg. age= 30×10=300---(2)
Sum of age of students and the teacher= 31× 11= 341---(1)
Age of the teacher=(1)-(2) 341- 300= 41 years
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