The average age of students in a class is 9 years. If a student with a – McqOptions

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1.	The average age of students in a class is 9 years. If a student with age 19 years joins the class, then new average age becomes 10 years. How many students are there in the class finally?
A.	7
B.	9
C.	8
D.	10
Answer» E.

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