Mahmoudfawzy83
In a certain company, at least 200 people own manual transmission vehicles. If 12 percent of the people who own manual transmission vehicles also own automatic transmission vehicles, do more people own automatic transmission vehicles than own manual transmission vehicles?
(1) 5 percent of the people who own an automatic transmissions vehicle also own a manual transmission vehicle.
(2) 45 people own both an automatic transmission vehicle and a manual transmission vehicle.
This looks like an Overlapping Sets problem - we're grouping people based on two characteristics, whether they own a manual and whether they own an automatic.
Here's what we're starting with:

The question is, is a > m?
Statement 1: We're now able to fill in the top left square in two different ways:

So, .05m = .12a. Therefore, 5m = 12a and m = 2.4a. m is definitely greater than a, so the answer to the question is "no". This statement is sufficient.
Statement 2. This lets us fill in a number in the top left square:

We could then calculate the value of m, but there doesn't seem to be a good reason to do that, since this is a Data Sufficiency problem. And a could have pretty much any value greater than 45 - so it could be bigger than or smaller than m. This statement is not sufficient.
So, the answer is
A.