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:

What fractional part of the total surface area of cube C is [#permalink]

Show Tags

22 Mar 2008, 00:57

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

50% (00:00) correct
50% (00:00) wrong based on 4 sessions

HideShow timer Statistics

16. What fractional part of the total surface area of cube C is red? (1) Each of 3 faces of C is exactly 1/2 red. (2) Each of 3 faces of C is entirely white.
_________________

Jimmy Low, Frankfurt, Germany Blog: http://mytrainmaster.wordpress.com GMAT Malaysia: http://gmatmalaysia.blogspot.com

"Each of 3 faces" means that 3 faces each have exacltly 1/2 red. So we dont know anything about the other 3 faces. And the same with statement 2

E is my choice.

Sondenso, If this meaning is right, we can use following: 1. cube has 6 faces 2. a face can be white or 1/2 red (C) Therefore, C is correct. 3 faces are white and 3 other faces are 1/2 red and \(ratio=\frac{3*\frac12}{6}=\frac14\)
_________________

"Each of 3 faces" means that 3 faces each have exacltly 1/2 red. So we dont know anything about the other 3 faces. And the same with statement 2

E is my choice.

Sondenso, If this meaning is right, we can use following: 1. cube has 6 faces 2. a face can be white or 1/2 red (C) Therefore, C is correct. 3 faces are white and 3 other faces are 1/2 red and \(ratio=\frac{3*\frac12}{6}=\frac14\)

Walker,

The 1 and the 2 combined do not say "the 3 faces...red" and "the other 3 faces...white", so we have 6 faces, how can we know what face? right?
_________________

3 of the 6 sides are entirely white -- means definitely not red. Let's talk about the other 3 sides now. First statement says: 3 of the 6 sides are exactly 1/2 red. Means; they must be talking about the 3 sides which are not entirely white.

Now, if "a" is side:

area of 1 side is a^2. total area for 6 sides is 6*a^2 area with red will be 3*((a^2)/2). Because half the area of each of the 3 remaining faces is red. (a^2)/2 will be half the area times 3 for three sides. now, divide: [3*((a^2)/2)]/[6*a^2]=1/4. We got the answer.
_________________

It’s quickly approaching two years since I last wrote anything on this blog. A lot has happened since then. When I last posted, I had just gotten back from...

Since my last post, I’ve got the interview decisions for the other two business schools I applied to: Denied by Wharton and Invited to Interview with Stanford. It all...

Marketing is one of those functions, that if done successfully, requires a little bit of everything. In other words, it is highly cross-functional and requires a lot of different...