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The average age of 30 students of a clas...

The average age of 30 students of a class is 30 years.When the average age of class teacher is also included the average age of the whole class increased by 1 year the age of the class teacher is:

A

3 years

B

60 years

C

61 years

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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ARIHANT SSC-AVERAGES-Exercise (Level 1)
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