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 between 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 the both statement A and B together are needed to answer the question.

4) if either the 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 speed of a boat in still water?
A. The downstream speed of the boat is three times the upstream speed of the boat.
B. The sum of upstream and downstream speeds of the boat is 16 kmph.

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