the average of 10 students and their teachers is 20 years. if the average age of 10 students is two years. find the average of their teachers
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Answer:
the answer is 41 years old
Step-by-step explanation:
the total age of the 20 students is 20x20 equals 400 years.
the total age with the teacher included is 21x21 equals 441years.
Therefore the teacher is 441–400 equals 41 years old
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