Anurag@Gurome wrote:

diebeatsthegmat wrote:Are at least 20% of the people in City H who are at least 30 years old bilingual?

1. In City H, 25 percent of the bilingual population is at least 30 years old.
2. In City H, of the population at least 30 years old, 18 percent of the women and 17 percent of the men are bilingual.

can you explain in details for me? i also think A works

From statement 1, nothing can be said regarding bilingual; NOT sufficient.
Statement 2: If women = 1000 and men = 100, then total bilingual = 180 + 170 = 350 or we can say 35% > 20% ---> Correction. total bilingual = 180 + 17 (17% of 100) = 197. Percentage = 197/1100 * 100 ~~17.9%

If women = 100 and men = 1000, then total bilingual = 170 + 18 = 188 or we can say 18.8% < 20%
No unique answer; NOT sufficient.

Combining (1) and (2) also, we can say nothing definite.

The correct answer is E.

Are at least 20% of the people in City H who are at least 30 years old bilingual?

2. In City H, of the population at least 30 years old, 18 percent of the women and 17 percent of the men are bilingual.