Plz help me understand what is this Question asking

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gdk800: Senior | Next Rank: 100 Posts; Posts: 54; Joined: Tue Feb 02, 2010 5:17 am; Thanked: 2 times

by gdk800 » Sun Nov 21, 2010 1:43 pm

[/img]

As per my understanding we have to find the ration of cookies in green tin to cookies in other tins (blue + red) but the explanation says it is the ration of cookies in green tin to cookies in green + red tin???
[spoiler]
OA is C[/spoiler]

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Source: Beat The GMAT — Problem Solving | Sun Nov 21, 2010 1:43 pm

diebeatsthegmat: Legendary Member; Posts: 1119; Joined: Fri May 07, 2010 8:50 amFollowed by: 3 members; Thanked: 29 times

by diebeatsthegmat » Sun Nov 21, 2010 5:37 pm

gdk800 wrote:
[/img]

As per my understanding we have to find the ration of cookies in green tin to cookies in other tins (blue + red) but the explanation says it is the ration of cookies in green tin to cookies in green + red tin???
[spoiler]
OA is C[/spoiler]

red= 1/3
G+B=2/3
B=1/4 so 2/3-1/4=5/12
thus G=5 parts
R=3
and blue =4
the importance is that you have to understand the last sentence,,,we have to find the faction of geen/(green+blue)
it is 5/9

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gdk800: Senior | Next Rank: 100 Posts; Posts: 54; Joined: Tue Feb 02, 2010 5:17 am; Thanked: 2 times

by gdk800 » Sun Nov 21, 2010 8:48 pm

diebeatsthegmat wrote:
gdk800 wrote:
[/img]

As per my understanding we have to find the ratio of cookies in green tin to cookies in other tins (blue + red) but the explanation says it is the ratio of cookies in green tin to cookies in green + red tin???
[spoiler]
OA is C[/spoiler]
red= 1/3
G+B=2/3
B=1/4 so 2/3-1/4=5/12
thus G=5 parts
R=3
and blue =4
the importance is that you have to understand the last sentence,,,we have to find the faction of geen/(green+blue)
it is 5/9

Dude, as per ur logic, it would be 5/8 and not 5/9.
green = 5/12,
blue = 1/4 and red = 1/3.

green/ (green + blue) = 5/12 /(5/12 + 1/4)
=>5/8 and it is not an option.

The language of the last sentence is controversial to me. What fraction of cookies are der in green tin as compared to cookies in others (i.e Blue + Red). This should be 5/7.

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The Jock: Master | Next Rank: 500 Posts; Posts: 207; Joined: Mon Oct 06, 2008 12:22 amFollowed by: 3 members; Location: India; Thanked: 5 times

by The Jock » Mon Nov 22, 2010 2:28 am

The answer is C and this question seems alright.
In the last sentence the question is asking the fraction of other tins(Red+Green) and Green.
Red= 1/3
Blue = 1/4
Green = 5/12

Answer = Green/(Red+Green)
5/12*12/9
= 5/9

Thanks and Regards,
Varun
https://mbayogi.wordpress.com/

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