The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher s age in years is

The average age of 30 boys in a class is 10 years. If the age of their

1.	The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher s age in years is
A.	38
B.	40
C.	30
D.	41
Answer» E.

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The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher s age in years is

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