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Director
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My argument here is that Statement-1 is insufficient here. [#permalink]
 03 Jun 2007, 20:37
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My argument here is that Statement-1 is insufficient here. Though it says that the number of members on the board is 23, the population can be equal to 500,000 also.
Please explain.
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Intern
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If the town had 25 board members, then the population is at least 500,000. Since there arn't 25 board members, we can say the population is less than 500,000.
Thats how I see it.
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Senior Manager
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galt wrote: If the town had 25 board members, then the population is at least 500,000. Since there arn't 25 board members, we can say the population is less than 500,000.
Thats how I see it.
umm, where is the question? i don't see it... 
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Re: DS - Population [#permalink]
04 Jun 2007, 11:16
A is simple. if there are 25members there are 500K ppl. if you have 23 members you have <500K ppl.
i am more interested to see how would you solve B. (hey i know you do not have to solve it, but show me how you got to the answer that is sufficient.
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CEO
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If there are 51 board members you can determine exactly what the population is.
500000 (for the first 25) + (26 * 30000)
Then you can get the actual current population by dividing this figure by 3. I am not going to do the math , since all that is important here is know how would you derive the solution.
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Senior Manager
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Re: DS - Population [#permalink]
06 Jun 2007, 19:32
Amit05 wrote: My argument here is that Statement-1 is insufficient here. Though it says that the number of members on the board is 23, the population can be equal to 500,000 also.
Please explain.
I´d say the problem is not properly worded. Some boards may have the policy to allow a varying number of representatives for a given population range, while others would have more exacting policies.
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Senior Manager
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you need to be logged on as a member to see images i believe
r019h wrote: galt wrote: If the town had 25 board members, then the population is at least 500,000. Since there arn't 25 board members, we can say the population is less than 500,000.
Thats how I see it. umm, where is the question? i don't see it... |
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Director
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25 --> representing 500,000 people.
addition 1 --> representing 30,000
is the population less than 25 ?
(1) there were 23 members on the board.
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I really don't see how this can be explained. It's intuitive, common-sense ..
25 members representing the first 500,000 people. There are 23 members --> population has not yet reached the
500,000 limit.
statement 1 is sufficient
(2) if population was 3 times as large, the board would have had 51 members
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51 members --> 25 for the first 500,000
51 - 25 = 26 x 30,000 = 780,000
Total population = 500k + 780k = 1,280,000 /3 < 500,000 for sure
Statement 2 is sufficient
ANSWER: D
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CEO
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Def. D.
Stmnt 1: we know the population is equal to or less than 500,000 so it is sufficient.
Stmnt 2: No point in showing math, its easy to see how this one is sufficient.
I can see where this can send alarm bells b/c on the GMAT we can't assume anything. We do know that it can't be over 500,000 if there are only 23members. Try it from this angle:
500,000/25=20000 So 1 member represents 20,000 people under the 500,000mark. So 23 would equal:460,000. So yes stmnt 1 is sufficient.
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close
