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:

A batch of cookies was divided among three tins: 2/3 of all the cookies were placed in either the blue tin or the green tin, and the rest were placed in the red tin. If 1/4 of all the cookies were placed in the blue tin, what fraction of the cookies that were placed in the other tins were placed in the green tin?

if we say the cookies are in either the blue tin or the green tin, it means that they can only be in one of them, not both or not shared. So how come you can get 1/4 later in the blue tin ? i don't get this one

The question said 2/3 of all the cookies were placed in either the blue tin or the green tin. Not ALL the cookies were placed in blue or green.

Also, it was stated in the first sentence that "A batch of cookies was divided among 3 tins...". Hope this helps!

Saw this in Kaplan 800 (2007-2008 edition page 286). I was confused as well, but now I see that the confusion comes from not reading the question carefully. The confusion is based on what "other tins" refers to. This is an example of how reading comprehension comes to play in the quantitative part!

P.S. Wow! I just realized it's 4 days away from the 4th anniversary since the previous post!

Hi everyone, I am having understanding part of the solution to this problem.

A batch of cookies was divided among three tins: 2/3 of all the cookies were placed in either the blue tin or the green tin, and the rest were placed in the red tin. if 1/4 of all cookies were placed in the blue tin, what fraction of the cookies that were placed in the other tins were placed in the green tin?

A)15/2 b)9/4 c)5/9 d)7/5 e)9/7

I realized that all the numerators are greater that their denominators, but my questions is, when I read kaplan's explanations, why it used this formula, green cookies/ green and red cookies, and it did not consider the blue cookies in the formula?

The answer is C. The question asks “what fraction of the cookies that were placed in the other tins were placed in the green tin?” This means what fraction of the cookies not placed in the blue tin were in the green tin. To solve subtract ¼ from 2/3. (This will give you the percentage of cookies in the green tin over all the cookies (blue, green and red). This equals 5/12. Then divide this number by the total number of cookies in both the green and red tin (or not the blue tin). This number equals (total number of cookies in both the green and red tin) 9/12. (5/12 +1/3). Then divide 5/12 by 9/12 and you get 5/9

if you read the highlighted sentence carefully , you will see "blue tin" is the main topic of the sentence . hence other over there refers to anything but blue(i.e R & G)

so basically what they are trying to ask is what fraction of R & G is G

B+G = 2/3 B = 1/4 => G = 2/3 - 1/4 = 5/12 R = 1/3

=> G/(R+G) = (5/12)/(1/3+5/12) = 5/9

Answer is C.

manalq8 wrote:

Hi everyone, I am having understanding part of the solution to this problem.

A batch of cookies was divided among three tins: 2/3 of all the cookies were placed in either the blue tin or the green tin, and the rest were placed in the red tin. if 1/4 of all cookies were placed in the blue tin, what fraction of the cookies that were placed in the other tins were placed in the green tin?

A)15/2 b)9/4 c)5/9 d)7/5 e)9/7

I realized that all the numerators are greater that their denominators, but my questions is, when I read kaplan's explanations, why it used this formula, green cookies/ green and red cookies, and it did not consider the blue cookies in the formula?

Hi, This is my first post on GMATclub. I have joined mastergmat's online course and it seems to be working fine. Solved this question using the Pluggin In method (one of Mastergmat's many clever ways of tackling such questions).

Assuming that the total number of cookies is 24, the number of cookies of each color can be found out. Thus, we have 6 for Blue, 10 for green and 8 for red. The answer thus can be calculated as (R+B)/G= 14/10=7/5.

Done in 34 seconds.

gmatclubot

Re: A batch of cookies
[#permalink]
11 Sep 2011, 09:17

So, my final tally is in. I applied to three b schools in total this season: INSEAD – admitted MIT Sloan – admitted Wharton – waitlisted and dinged No...

A few weeks ago, the following tweet popped up in my timeline. thanks @Uber_Mumbai for showing me what #daylightrobbery means!I know I have a choice not to use it...

“This elective will be most relevant to learn innovative methodologies in digital marketing in a place which is the origin for major marketing companies.” This was the crux...