Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

probably the answer is based on "exactly what % of perople purchase only newspaper Y", but this is wrong because the question is "what % of perople purchase newspaper Y". therefore, we do not need the information i B that "how many buy x and y". C cannot be the answer..

No information about total population.
Without the instruction that X and Y are the only newspapers in that town, we don't know anything.
_________________

C)...say 100 ppl. 27 do not buy either newspaper and 73 do buy either or both newspapers. 73/8 is the number of ppl who buy Y. 0,7*73/8 buy y and x. 73/8 - 0,7*73/8 buy only Y.
_________________

If your mind can conceive it and your heart can believe it, have faith that you can achieve it.

probably the answer is based on "exactly what % of perople purchase only newspaper Y", but this is wrong because the question is "what % of perople purchase newspaper Y". therefore, we do not need the information i B that "how many buy x and y". C cannot be the answer..

but without B) we cannot know how many ppl buy only y or only x.
_________________

If your mind can conceive it and your heart can believe it, have faith that you can achieve it.

probably the answer is based on "exactly what % of perople purchase only newspaper Y", but this is wrong because the question is "what % of perople purchase newspaper Y". therefore, we do not need the information i B that "how many buy x and y". C cannot be the answer..

but without B) we cannot know how many ppl buy only y or only x.

but we donot need only Y, because the question is how many buy Y? therefore if we need Y buyers whether they also buy x or z.

x/y =7
x=7y

total who do not buy nither x nor y = 27
total who buy either x or y = 73
x+y = 73%
7y+y = 73%
y = (73/8)%

Your problem is that total people who buy A or B is not equal to x+y. If there are people who buy both then the 73% would be x+y-(people who buy both) because you would have double counted the people who buy both.
_________________

Keep on asking, and it will be given you;
keep on seeking, and you will find;
keep on knocking, and it will be opened to you.

probably the answer is based on "exactly what % of perople purchase only newspaper Y", but this is wrong because the question is "what % of perople purchase newspaper Y". therefore, we do not need the information i B that "how many buy x and y". C cannot be the answer..

but without B) we cannot know how many ppl buy only y or only x.

but we donot need only Y, because the question is how many buy Y? therefore if we need Y buyers whether they also buy x or z.

x/y =7 x=7y

total who do not buy nither x nor y = 27 total who buy either x or y = 73 x+y = 73% 7y+y = 73% y = (73/8)%

do we need only Y buyers?

i donot know where i am lost? somewhere...
i should refresh and restart it again...