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Recent studies show that people between the ages of 13 and

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Re: Recent studies show that people between the ages of 13 and [#permalink]

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New post 16 Mar 2017, 07:19
Hi Bunuel,
Hope you're well brother. This question is also seen in another thread. So, can you please merge it to get the all info in one place, if it is?
Thank you..
Here is another same thread.

https://gmatclub.com/forum/top150-cr-re ... 09701.html
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Re: Recent studies show that people between the ages of 13 and [#permalink]

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New post 16 Mar 2017, 09:13
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PrakharGMAT wrote:
Hi Experts / daagh / chetan2u / VeritasPrepKarishma / mikemcgarry,

Can you please provide your reasoning on this CR question.

Thanx in advance


Quote:
Recent studies show that people between the ages of 13 and 55 produce 65 pounds more garbage per year than they did in 1995. This increase has led to a higher percentage of the total garbage produced by all the age groups. This age group constitutes a growing percentage of the population, so it partially explains this rise.

Which of the following can be concluded from passage?

A. People over the age of 55 produce more garbage than people less than the age of 13.
B. Population has risen since 1995.
C. People between the age of 13 and 55 are more than half of current population.
D. Before 1995, people below age 13 and above age 55 produced higher percentage of total garbage than they do now.
E. People between the age of 13 and 55 produce more garbage than those below 13 or older than 55.


This one is the ''draw the conclusion question''. In this type of question, you've to ALWAYS combine AT LEAST 2 STATEMENTS from the passage to prove the conclusion. Any answer choice that APPEAR TO JUST RE-STATE ONE FACT-----will always be wrong!
A) This option just discuss one fact (about age)------>so, wrong. also, no evidence.
B) This option just discuss one fact
C) This option just discuss one fact. also no evidence.
D) Talking about 2 facts (age and Year)
E) This option just discuss one fact.
am I right expert?
Thank you...
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Re: Recent studies show that people between the ages of 13 and [#permalink]

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New post 17 Mar 2017, 01:54
iMyself wrote:
PrakharGMAT wrote:
Hi Experts / daagh / chetan2u / VeritasPrepKarishma / mikemcgarry,

Can you please provide your reasoning on this CR question.

Thanx in advance


Quote:
Recent studies show that people between the ages of 13 and 55 produce 65 pounds more garbage per year than they did in 1995. This increase has led to a higher percentage of the total garbage produced by all the age groups. This age group constitutes a growing percentage of the population, so it partially explains this rise.

Which of the following can be concluded from passage?

A. People over the age of 55 produce more garbage than people less than the age of 13.
B. Population has risen since 1995.
C. People between the age of 13 and 55 are more than half of current population.
D. Before 1995, people below age 13 and above age 55 produced higher percentage of total garbage than they do now.
E. People between the age of 13 and 55 produce more garbage than those below 13 or older than 55.


This one is the ''draw the conclusion question''. In this type of question, you've to ALWAYS combine AT LEAST 2 STATEMENTS from the passage to prove the conclusion. Any answer choice that APPEAR TO JUST RE-STATE ONE FACT-----will always be wrong!
A) This option just discuss one fact (about age)------>so, wrong. also, no evidence.
B) This option just discuss one fact
C) This option just discuss one fact. also no evidence.
D) Talking about 2 facts (age and Year)
E) This option just discuss one fact.
am I right expert?
Thank you...



I'm no expert, not yet :P, but here's my view:

A fact cannot be disputed within the context of the argument, whereas all statements that you've highlighted as fact are open to debate. For example, choice B - argument mostly talks in percentage and doesn't mention anything about the # of people. So this statement can be contested.

This is an inference question, so the answer must be true. Never read how many statements one must combine to get to the answer. Can you cite source of your reasoning?

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#Top150 CR: Recent studies show that people between the ages of 13 [#permalink]

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New post 17 Apr 2017, 00:04
Recent studies show that people between the ages of 13 and 55 produce 65 pounds more garbage per year than they did in 1995. This increase has led to a higher percentage of the total garbage produced by all the age groups. This age group constitutes a growing percentage of the population, so it partially explains this rise.

Which of the following can be concluded from passage?

A. People over the age of 55 produce more garbage than people less than the age of 13.
B. Population has risen since 1995.
C. People between the age of 13 and 55 are more than half of current population.
D. Before 1995, people below age 13 and above age 55 produced higher percentage of total garbage than they do now.
E. People between the age of 13 and 55 produce more garbage than those below 13 or older than 55.
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Last edited by Vyshak on 17 Apr 2017, 02:15, edited 1 time in total.
Topic Merged. Search before posting.

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Re: #Top150 CR: Recent studies show that people between the ages of 13 [#permalink]

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New post 18 Apr 2017, 21:53
Guilio wrote:
Very tricky question.

A. People over the age of 55 produce more garbage than people less than the age of 13. We have no information about the amount of garbage produced by different groups, so this cannot be the answer.

B. Population has risen since 1995. Most probably, but not necessarily. Besides, the argument says that the age group between 13 and 55 constitutes a growing percentage of the population, hence we could assume some other group constitutes decreasing percentage of the population. Which one prevails is of course not clear.

C. People between the age of 13 and 55 are more than half of current population. We don't know the proportions.

D. Before 1995, people below age 13 and above age 55 produced higher percentage of total garbage than they do now. This one is tempting, so at first keep it in and read the last one. From the argument, the age group between 13 and 55 produces now more garbage than it did, meaning it amounts to greater portion of the total garbage than it used to. That implies, that other groups have to produce less - not in absolute amount, but in proportion to the whole population. Hence D is correct.

E. People between the age of 13 and 55 produce more garbage than those below 13 or older than 55. Hm, this one could be true as well, but is not 100% supported by the argument. Let's go back to D.

Hope it's clear.


Choice 'D' seems correct but it has given that age group 13 to 55 produced more garbage now than in 1955 & Correlation between age groups- 13 to 55 & other age groups not given. So how can you conclude. I think some correlation needs to be provided.

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#Top150 CR: Recent studies show that people between the ages of 13 [#permalink]

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New post 21 Jun 2017, 17:47
there are 3 comparison:
population of 13-65 vs population 13<>65
amount of garbage of 13-65 vs amount 13<>65
percentage and indirectly amount of garbage each year.

the cause relation indicates that the increasing amount every year is caused by increasing amount of 13-65 => percentage of garbage of this group increases => D is correct.

More importantly, this is a conclusion question, not an inference question. In the latter, what is inferred must be true.
In some questions, the conclusion question is the inference question.

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Re: Recent studies show that people between the ages of 13 and [#permalink]

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New post 26 Jun 2017, 07:59
Merged topics. Please, search before posting questions!
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Recent studies show that people between the ages of 13 and [#permalink]

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New post 25 Aug 2017, 18:50
2 ways to tell D is the right answer
1/ using POE
2/ "This increase has led to a higher percentage of the total garbage produced by all the age groups. " => test takers should not be confused by the words "by all the age groups" because "a higher percentage" indicates that this is a comparison between the group of 13-65 and the rest.

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Recent studies show that people between the ages of 13 and   [#permalink] 25 Aug 2017, 18:50

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