Someone just PMd me a great question:

In regards to quantitative topics such as Algebra, Ratio/Proportion, Percentages, Inequalities, Word Problems(Distance type and Work Type), Statistics and Combinatorics; could you give me an idea of composition of those question topics in terms of percentages or frequency in the 37 questions?

Here is the answer:
22 PS Questions
15 DS Questions
9 Word Translations
5 Geometry
8 Number Properties
8 Algebra Questions
6 Fractions, Decimals, Percents

Each of the above numbers is plus/minus a couple. The GMAT actively attempts to balance between subject content. The titles and categories of that content is known in some cases: PS vs. DS, and unknown in some cases: WT/Geo/NumProps/Alg/FDP's. In those cases, what I am providing is the industry accepted guess about what the categories are.[/quote]