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Finding of a survey of Systems magazine subscribers: Thirty

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

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New post 26 Oct 2011, 15:55
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A
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E

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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.
[Reveal] Spoiler: OA
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 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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New post 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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New post 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. :)
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 27 Oct 2011, 15:27
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I picked E...by POE it's very hard to understand the argument....I like gummybear explanation

Premise 1: Subscribers...... 35 years old or younger...... accounted for 30% of the orders
Premise 2: 35 years old or younger..... accounted for most of the orders
Therefore many orders were placed by non subscribers.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 03 Nov 2011, 01:51
it is hard to understand argument. I do not see the similar questions in OG and gmatprep or from other sources. Anyone see the similar questions.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 03 Nov 2011, 02:13
Tough one!!
I found it a bit confusing.Chose B first but now understand why it is E after reading gummybear's explanation.

E is correct.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 13 Oct 2012, 06:17
What would be the difficulty level of this one
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 17 May 2014, 16:46
Can anyone please post the OE or attempt one regarding this question?
Would appreciate it very much (With Kudos of course)

Thanks!
Cheers!
J :)
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 08 Jul 2014, 23:57
arzad wrote:
I picked E...by POE it's very hard to understand the argument....I like gummybear explanation

Premise 1: Subscribers...... 35 years old or younger...... accounted for 30% of the orders
Premise 2: 35 years old or younger..... accounted for most of the orders
Therefore many orders were placed by non subscribers.


I just miss out the subscribers and advertisers...gosh
thx a lot!
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 09 Jul 2014, 03:23
(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. -extreme option-
(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now. -argument has never talked about the proportions, so irrelevant-
(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five. -Ask yourself, based upon the argument, can you firmly answer this? NO-
(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.-Irrelevant-
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.

By POE, Correct option is E
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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Survey of System Magazine Subscribers - This is within the subscribers
Total Orders by Subscribers = 100
by LT35Yrs = 30
by GT35Yrs = 70

Now other survey done by advertisers, say Coke - this survey includes all buyers, Subscribers + Non-Subscribers
Coke found that - of total, say 1000, Orders
Most (>50%) Orders are from LT35Yrs = 501
Others from GT35Yrs = 499

Looking at the numbers, we can say that Not all LT35Yrs Buyers (=501) of Coke are also LT35Yrs subscribers (=30) of System Magzine

Hence Answer (E)
Quote:
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.


I am just putting this in my own words, but thanks for gummybear for providing framework to understand this question.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 20 Dec 2015, 22:40
gummybear wrote:
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"



Orders placed = subscriber + non subscriber
If say 60 subscribers placed order & 18 of them were below thirty five.
If non-subscribers, who placed order, were 40 & out of them 33 were below thirty five.
Now the total orders placed = 100 & out of them 51 are from people below thirty five.

This makes both the statement stand true whereas Option E does not stand true. Correct me if I am wrong.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 26 Dec 2015, 02:53
How much time did you guys take to solve this question? I took arnd 4 mins. How can someone be so quick with such a weird question?

Honestly I found this argument really confusing.


I used POE to reach to the ans. I know that the correct answer is E , but how do you get to the answer in about 2-2.5 mins?

Arrghhh!! GMAT is not easy!!!
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New post 16 Feb 2016, 13:03
I think E reflect the larger population of the advertisers survey which includes subscribers and non-subscribers , resolving the paradox.
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Re: Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 28 Jul 2016, 08:19
I recently bumped into this question from elsewhere..
Option E - 'Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine'
Option E says 'who placed orders in response to adv in systems'

Isn't this statement requiring one more assumption that people who are non subscribers read 'systems' in the first place..? If somebody can clarify please..
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miaojunmaggie wrote:
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.


Let's say that we have 100 people participating in the survey.

There are Subscribers and Non subscribers, and then there are people >35 or <35

Subscribers say that 30 were subscribers and <35
Advertisers say that most of the orders (more than 50) were placed by people <35

The above two statements mean that at least 21 (51-30) people were non-subscribers who placed the orders.
And, we do not get any information on people equal to or more than the age 35 other than <49 people ordered from this group.

(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. We have no information on split of group equal to or>35.

(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now. We have no information an the data of people then and now.

(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five. No. this is exact opposite to the information we have.

(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. We don't know the dollar value.

(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine. Correct choice.
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Finding of a survey of Systems magazine subscribers: Thirty [#permalink]

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New post 22 Aug 2016, 05:04
It was very difficult to operate these statements in my head. So I used a diagram for overlapping sets.

I used 100 people who placed order as total (convenient for % problems)
I plugged in 99 people as people under age 35 who ordered merchandise (includes both subscribers and non-subscribers). Why 99? 99 can absolutely refer to most of people who placed order.

When I looked over the answers, I checked with my table:
(A) In my table there are only people who placed order. We don't know anything about subscribers who did not place order. Irrelevant
(B) We only regard the information from last year. What is happening "now" doesn't matter. Irrelevant
(C) Only 30% of subscribers under age 35 placed order last year. But the statement states "most". 30% is way to low for being "most". So untrue
(D) Wait a minute. The statement talks about dollar amount. We are only given information about number of people. Irrelevant
(E) In the table we see that at least 69 comprises the number of people who placed order. 69 absolutely qualifies to refer to "many" non-subscribers. True

It is a very time consuming question. If I get this question on the Test I probably would random guess.

Consider giving some kudos. I have only 0 kudos from the users. Appreciate it.
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Finding of a survey of Systems magazine subscribers: Thirty   [#permalink] 22 Aug 2016, 05:04
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