_ The average of 20 students is 12 years, if the teacher's age is incl – McqOptions

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1.	_ The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teacher is:$?
A.	30 yrs
B.	33 yrs.
C.	28 yrs
D.	35 yrs.
Answer» C. 28 yrs

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