Directions: Each question below is followed by two statements A and B. You have to determine whether the data given in the statement are sufficient to answer the question. You should use the data and your knowledge of mathematics to choose from the possible answers. Give answer:

1) if the statement A alone is sufficient to answer the question, but the statement B alone is not sufficient.

2) if the statement B alone is sufficient to answer the question, but the statement A alone is not sufficient.

3) if both statement A and B together are needed to answer the question.

4) if either statement A alone or B alone is sufficient to answer the question.

5) if you cannot get the answer from the statements A and B together, but needed even more data.

Q:

What is the age of a teacher?

A. The average age of the teachers and the students is 5 year more than that of students.

B. The average age of the teacher and students is 28 years.

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