The Average age of a class of 15 students is 20 years. One student of – McqOptions

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1.	The Average age of a class of 15 students is 20 years. One student of age 25 years left the class and a new student of age 10 years joined the class. What is the new average of the class?
A.	20 yrs
B.	19 yrs
C.	21 yrs
D.	18 yrs
Answer» C. 21 yrs

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