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In a particular city the demographics is such that there are four men

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Senior Manager
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Joined: 29 Nov 2018
Posts: 280
Concentration: Marketing, Strategy
In a particular city the demographics is such that there are four men  [#permalink]

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New post 29 Jan 2019, 00:12
1
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

58% (02:21) correct 42% (02:08) wrong based on 31 sessions

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In a particular city the demographics is such that there are four men for every three women and five children for every three men. If the city has 81,180 women, find the number of children in the city.

(1) 135,300
(2) 36,331
(3) 180,400
(4) 158,400
(5) 144,320
NUS School Moderator
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Re: In a particular city the demographics is such that there are four men  [#permalink]

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New post 29 Jan 2019, 01:10
4M = 3W
5C = 3M
M/W = 3/4
M = 3/4*W = 3/4*81180 = 60885.

C/M = 3/5
C = 3/5*60885
C = 36531.

cfc198, Can you check the OA?
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Re: In a particular city the demographics is such that there are four men  [#permalink]

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New post 29 Jan 2019, 05:59
M:W = 4:3 = 12:9
M:C = 3:5 = 12:20

That means C:M:W = 20:12:9

With 81,180 / 9 we get 9,020 as one part.

C=20*9,020=180,400

Answer choice C is correct :)
GMAT Club Bot
Re: In a particular city the demographics is such that there are four men   [#permalink] 29 Jan 2019, 05:59
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In a particular city the demographics is such that there are four men

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