DS

The formula: Total = A + B - Both + Neither is very useful for these kind of problems

Question is asking us to find the value of "Both".

Since we are dealing with percentages, consider the Total to be 100

Statement 1: Gives the value of Neither = 2% (i.e. 2). Not sufficient because we do not know the distribution between A & B.

Statement 2: Gives the values of A = 89 & B = 34. Not sufficient.

Together both the statement provide us with the required information.
100 = 89 + 34 - Both + 2. From this we can determine the value of Both.

Hence C. Hope this helps.

I think that is wrong. answer shoud be E

Has to be E as it does not give any numbers just percentages.

You are right ketkoag...it should be E.

-BM-

Yea, I'm sure that the question intended to ask what percent of people speak both. There is no possible way of figuring out how many people without a concrete number.