gmattesttaker2 wrote:
Will at most 80 percent of the students at a certain high-school apply for college?
(1) Of the students at the high-school, 76 percent of the male and 80 percent of the female will apply for college?
(2) There are 980 students at the highschool.
Target question: Will at most 80 percent of the students at a certain high-school apply for college?
Statement 1: Of the students at the high-school, 76 percent of the male and 80 percent of the female will apply for college?
This becomes a weighted average question.
The important point here is that, if take a male population with a
76% college application rate and combine it with a female population with a
80% college application rate, the RESULTING GROUP will be such that
76% < (college application rate)
< 80%
So, we can see that it is
definitely the case that
at most 80 percent of the students will apply for college.
Since we can answer the
target question with certainty, statement 1 is SUFFICIENT
For more information on weighted averages, you can watch this free GMAT Prep Now video: https://www.gmatprepnow.com/module/gmat- ... ics?id=805
Statement 2: There are 980 students at the highschool
This has no information about college application rates.
There are several values of x and y that satisfy this condition. Here are two:
So statement 2 is NOT SUFFICIENT
Answer =
A
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
