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# Finding of a survey of Systems magazine subscribers: Thirty

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Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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01 Oct 2008, 17:52
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55% (hard)

Question Stats:

66% (04:29) correct 34% (01:52) wrong based on 1343 sessions

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Finding of a suvey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in reponse to advertisements in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

a) More subscribers to Systems who have never ordered merchanise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five,

b) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.

c) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.

d) Last year, the average dollar a mount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.

e) Last year many people who placed orders for merchandise in reponse to advertisements in Systems were not subscribers to the magazine.

I got this question from the GMATprep. Please explain why your answer choise is correct and why the rest of the answer choices are wrong. Thanks!
[Reveal] Spoiler: OA

Last edited by tarek99 on 02 Oct 2008, 03:28, edited 2 times in total.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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01 Oct 2008, 22:32
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tarek99 wrote:
Finding of a suvey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in reponse to advertisements in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

a) More subscribers to Systems who have never ordered merchanise in response to advertisements in the magazine are age thirty-five was considerably lower last year than it is now.

b) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.

c) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.

d) Last year, the average dollar a mount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.

e) Last year many people who placed orders for merchandise in reponse to advertisements in Systems were not subscribers to the magazine.

I got this question from the GMATprep. Please explain why your answer choise is correct and why the rest of the answer choices are wrong. Thanks!

Orders placed = subscriber + non subscriber
If say 100 subscribers placed order & 30 of them were below thirty five.
If nonsub, who placed order, were 1000 & out of them 900 were below thirty five.
Now the total orders placed = 1100 & out of them 930 are from people below thirty five.

This makes both the statement stand true.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 00:17
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IMO E.

Stmt1: 30% order placed by Subscriber and less than 35 age people
Stmt2: Most of the order came from 'less than 35 age people'
Conclusion: Most is not all; however, if 500 people below 35 placed their order, only 150 people are subscriber and rest 350 people are NOT subscriber.
Hence, E is correct.

A: No info on present statistics
B: No info on present statistics
C: Opposite statement: Order actually placed by less than 35 age people mostly
D: Can't predict average \$ amount
E: IMO
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Posts: 807
Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 01:09
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definitely E
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 01:16
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tarek99 wrote:
Finding of a suvey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in reponse to advertisements in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

a) More subscribers to Systems who have never ordered merchanise in response to advertisements in the magazine are age thirty-five was considerably lower last year than it is now. -> there is no mention of comparison between today and yesterday

b) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now. -> same as above ELIMINATE
c) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five. -> not suyre no where we know the proportion of orders by subscribers

d) Last year, the average dollar a mount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over. -> OOS

e) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine. -> APT here since if this is true the above argument is correct i.e. we can say 30 % of subscribers orders wher by <35 age grp and also at the same time most of all the orders are by <35

I got this question from the GMATprep. Please explain why your answer choise is correct and why the rest of the answer choices are wrong. Thanks!

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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 03:41
wow, you guys are good. The OA is E. I honestly couldn't see it. What difficulty level would you guys rate this question? I really struggled with this question type and I would need to practice more. Where would you suggest that I find such questions to practice with?

regards,
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 08:47
tarek99 wrote:
wow, you guys are good. The OA is E. I honestly couldn't see it. What difficulty level would you guys rate this question? I really struggled with this question type and I would need to practice more. Where would you suggest that I find such questions to practice with?

regards,

Try kaplan 800. Difficulty level is relative. If you figure it out then its easy & if you dont then its difficult. Neways I'd rate it average but good question. You're bound to see similar questions in actual GMAT.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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02 Oct 2008, 18:04
E for me 2
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Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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09 Feb 2010, 16:08
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Finding of a survey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in response to adverstisments in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under thirty-five.

For both of the findings to be accurate, which of the following must be true?

A.) More subscribers to Systems who have never order merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.

B.) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.

C.) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.

D.) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.

E.) Last year many people who placed orders in response to advertisements in Systems were not subscribers to the magazine.

[Reveal] Spoiler:
E

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Re: GMAT PREP 1 CR [#permalink]

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09 Feb 2010, 18:58
The catch in the question is whether all those who placed orders in response to advertisements, per 2nd statement, were subscribers and only E clarifies the situation.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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29 May 2011, 09:51
E because of above reasons
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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30 May 2011, 05:47
E, but took me two minutes!
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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30 May 2011, 07:33
E. It's the only option that reconciles the two different surveys.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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30 May 2011, 15:47
+1 E

Easy, but its lenght makes it difficult.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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31 May 2011, 05:04
E but took 2+ minute to complete.
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Re: Finding of a suvey of Systems magazine subscribers: Thirty [#permalink]

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31 Jul 2011, 06:00
E....
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Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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26 Oct 2011, 15:55
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Finding of a survey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.

Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

(A) More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.
(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.
(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.
(D) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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26 Oct 2011, 18:09
Can anyone explain it? I kind of get lost when reading the question. Complex...
why E is right? I chose C instead.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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27 Oct 2011, 11:15
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miaojunmaggie wrote:
Can anyone explain it? I kind of get lost when reading the question. Complex...
why E is right? I chose C instead.

Let's assume
1. A total of 100 merchandise orders were placed last year by the subscribers in response to the advertisement.
2. A total of 200 merchandise orders were received by Systems in response to the advertisement (place by non-subscribers, or in the survey's terminology - people)

Therefore, total non-subscriber (people) orders = 100

It follows from #1 that
Subscribers under 35 years old = 30 orders
Subscribers equal-to/more than 35 years old = 70 orders

Since, From stimulus: Most of the merchandise orders
placed in response to advertisements in Systems last year were placed by people under age thirty-five
,

Subscribers + Non-subscribers (people) less than 35 years old = 101 and above

Hence, the OA is "E"
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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27 Oct 2011, 13:24
Haha, I understand why C is wrong now. It says most of the merchandise orders are placed by people over 35, and it contradicts with the stimulus which says most of the orders placed are by people under 35.

It demonstrates how important reading comprehension is in critical reasoning.
Re: Finding of a survey of Systems magazine subscribers: Thirty   [#permalink] 27 Oct 2011, 13:24

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