What is the average age of children in the class?
Statement : I. The age of the teacher is as many years as the number of children.
II. Average age is increased by 1 year if the teacher's age is also included.
1
Statement I alone is sufficient but II alone is not sufficient to answer
2
Statement II alone is sufficient but I alone not is sufficient to answer
3
Both statement I and II are not sufficient to answer
4
Either statement I or II alone sufficient to answer