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A batch of cookies was divided among three tins: 2/3 of all

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A batch of cookies was divided among three tins: 2/3 of all [#permalink] New post 17 Oct 2005, 16:28
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A
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E

Difficulty:

  55% (hard)

Question Stats:

47% (03:04) correct 53% (00:53) wrong based on 48 sessions
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?

A. 15/2
B. 9/4
C. 5/9
D. 7/5
E. 9/7

OPEN DISCUSSION OF THIS QUESTION IS HERE: a-batch-of-cookies-was-divided-amomg-3-tins-2-3-of-all-the-86680.html
[Reveal] Spoiler: OA
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 [#permalink] New post 17 Oct 2005, 16:45
red = 1/3
blue + green = 2/3
blue = 1/4, so green = 5/12

we are asked -> green/(blue+red) = 5/7

but i don't see this in the ans. let me think...
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 [#permalink] New post 17 Oct 2005, 18:03
suppose there are 12 cookies

then 1/3 or 4 are put in red bin

1/4 of 12=3 cookies in blue tin

then green tin will have 5 cookies

now the question is asking of the remainin cookies that were not put in blue bin, what fraction was put in green tin

so 5/(5+4) or 5/9
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 [#permalink] New post 17 Oct 2005, 18:10
gsr wrote:
red = 1/3
blue + green = 2/3
blue = 1/4, so green = 5/12
we are asked -> green/(blue+red) = 5/7
but i don't see this in the ans. let me think...


Now I see, we are asked to find green/(green + red) = 5/9
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 [#permalink] New post 17 Oct 2005, 18:12
HIMALAYA wrote:
freshina, where did you find that?


Himalaya, read this part alone - i think it made sense
"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 " -> green+red!
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 [#permalink] New post 17 Oct 2005, 18:13
what fraction of the cookies that were placed in the other tins [red and green] were placed in the green tin

BTW this problem is not GMAT quality I think ! GMAT questions are very clear...i mean in quant they are not testing your RC skills...right?

HIMALAYA wrote:
TeHCM wrote:
what fraction of the cookies that were placed in the other tins were placed in the green tin?
fresinha12 wrote:
the question is asking of the remainin cookies that were not put in blue bin, what fraction was put in green tin


freshina, where did you find that?
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 [#permalink] New post 17 Oct 2005, 18:16
fresinha12...u seem to be fully charged up in the evening compared to how you were in the morning! cool!
what time of the day are you taking the test? :wink:
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 [#permalink] New post 17 Oct 2005, 18:36
OA is C, 5/9. This question was in Kaplan 800.

I'm still a little confused. When it says "What fraction of the cookies that were placed in the other tins...." why shouldn't the blue tin be counted towards the "other" tins?

(I hope the real GMAT does not have convoluted wording questions such as this one)
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 [#permalink] New post 17 Oct 2005, 18:40
Hope GMAT will not have such wordings!

Read one of my above posts, others = other than blue.
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 [#permalink] New post 17 Oct 2005, 18:42
gsr wrote:
Hope GMAT will not have such wordings!

Read one of my above posts, others = other than blue.


Ahh...Thanks! Careless reading. I think I need glasses......
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 [#permalink] New post 17 Oct 2005, 18:55
gsr wrote:
fresinha12...u seem to be fully charged up in the evening compared to how you were in the morning! cool!
what time of the day are you taking the test? :wink:


seems freshina12 is reday for joining 7xx club. :lol:
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 [#permalink] New post 18 Oct 2005, 05:00
morning....damnit...I should change to an evening time...

gsr wrote:
fresinha12...u seem to be fully charged up in the evening compared to how you were in the morning! cool!
what time of the day are you taking the test? :wink:
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 [#permalink] New post 18 Oct 2005, 07:40
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Blue tin or red tin: 2/3 (N)
Red tin: (1/3)N

Blue tin: (1/4)N

What the last statment meant, is it wants this fraction: (# of cookies in green tin)/(# of cookies in red and green tin)

# of cookies in green tin = 2N/3 - N/4 = 8N- 3N/12 = 5N/12
# of cookies in red and green tin = N/3 + 5N/12 = 9N/12

Fraction = 5N/12 * 12/9N = 5/9 (C)
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 [#permalink] New post 18 Oct 2005, 11:15
Thanks everyone! :lol:
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 [#permalink] New post 18 Oct 2005, 12:36
I hate to beat a dead horse - but I'll do it any way. :lol:

Draw a table for these questions and you'll be less confused - I'm a visual type of test taker - you probably haven't notice. :wink:
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 [#permalink] New post 18 Oct 2005, 19:44
Titleist wrote:
I hate to beat a dead horse - but I'll do it any way. :lol:
Draw a table for these questions and you'll be less confused - I'm a visual type of test taker - you probably haven't notice. :wink:

your previous avatar was awsome..... :lol:
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Re: PS Word Problem [#permalink] New post 20 Oct 2005, 03:32
TeHCM wrote:
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 :oops:
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Re: PS Word Problem [#permalink] New post 20 Oct 2005, 08:06
2/3 are in either blue or green tin, and 1/4 are actually in blue tin, with the rest goes to the green tin. Say toal is 12, then 8 goes to blue or green. We later know that 3 actually goes to blue tin, so 8-3=5 got to go into the green tin.
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Re: PS Word Problem [#permalink] New post 20 Oct 2005, 08:22
Antmavel wrote:
TeHCM wrote:
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 :oops:


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!
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 [#permalink] New post 20 Oct 2005, 10:24
fresinha - nice answer! I understood your explanation the best.

I think the question itself was worded too weird...
  [#permalink] 20 Oct 2005, 10:24
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