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# The ratio of the number of women to the number of men to the

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Manager
Joined: 25 Apr 2007
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The ratio of the number of women to the number of men to the [#permalink]  30 Oct 2007, 17:31
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The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?

(1) The total number of women and children in the room is 12
(2) There are fewer than 4 men in the room
SVP
Joined: 29 Aug 2007
Posts: 2493
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Kudos [?]: 578 [0], given: 19

Re: DS - Number of people in room [#permalink]  30 Oct 2007, 20:50
johnbaker wrote:
The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?

(1) The total number of women and children in the room is 12
(2) There are fewer than 4 men in the room

D.

1: person cannot be in fraction.
2: Same as above.
Director
Joined: 11 Jun 2007
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yup D
either statement is sufficient to find the total of people (which is 14)
SVP
Joined: 04 May 2006
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Schools: CBS, Kellogg
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one more vote for D, the same explaination as above
Manager
Joined: 25 Apr 2007
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what is stmt 2 telling us here?

fewer than 4 men in room can be 2 OR 3

if we take 3 then u have total = 42 - 15 W , 6 M & 21 C. The ratio is still 5:2:7
Director
Joined: 11 Jun 2007
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johnbaker wrote:
what is stmt 2 telling us here?

fewer than 4 men in room can be 2 OR 3

if we take 3 then u have total = 42 - 15 W , 6 M & 21 C. The ratio is still 5:2:7

good catch! i assumed M had to be mult of 2... doh
is the correct answer A then?
Manager
Joined: 25 Apr 2007
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Answer key has D as OA and i got A. But i don't c whats stmt 2 is doing.
That's why i posted it.
Current Student
Joined: 31 Aug 2007
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johnbaker wrote:
Answer key has D as OA and i got A. But i don't c whats stmt 2 is doing.
That's why i posted it.

i think its D because men= 1,2,3
ratio of w:m:c is 5x:2x:7x, only x=1 will give you whole people.
Manager
Joined: 25 Apr 2007
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young_gun wrote:
johnbaker wrote:
Answer key has D as OA and i got A. But i don't c whats stmt 2 is doing.
That's why i posted it.

i think its D because men= 1,2,3
ratio of w:m:c is 5x:2x:7x, only x=1 will give you whole people.

can you elaborate on this part ???
"ratio of w:m:c is 5x:2x:7x, only x=1 will give you whole people"
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