The use of automobile safety seats by children aged 4 and : GMAT Critical Reasoning (CR) - Page 2
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The use of automobile safety seats by children aged 4 and

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Re: good cr please slove [#permalink]

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New post 02 Sep 2010, 19:50
arghya05 wrote:
The use of automobile safety seats by children aged 4 and under has nearly doubled in the past 8 years. It is clear that this increase has prevented child fatalities that otherwise would have occurred, because although the number of children aged 4 and under who were killed while riding in cars involved in accidents rose 10 percent over the past 8 years, the total number of serious automobile accidents rose by 20 percent during that period.
Which one of the following, if true, most strengthens the argument?
(A) Some of the automobile safety seats purchased for children under 4 continue to be used after the child reaches the age of 5.
(B) The proportion of serious automobile accidents involving child passengers has remained constant over the past 8 years.
(C) Children are taking more trips in cars today than they were 8 years ago, but the average total time they spend in cars has remained constant.
(D) The sharpest increase in the use of automobile safety seats over the past 8 years has been for children over the age of 2.
(E) The number of fatalities among adults involved in automobile accidents rose by 10 percent over the past 8 years.

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QA 8


The first thing I thought when I read the bolded part of the argument was, "The total number of serious automobile accidents does not specify the age of the people in the cars - what if that 20% increase was made up entirely of adults?" If that were true, then the argument that the increase in child fatalities is irrelevant would be false. So, if you want to strengthen the claim, look for a piece of information stating that the number of children in these accidents has increased as well. Answer (B) states exactly that - since the proportion of accidents involving children has remained constant, then any increase in ALL accidents means there's an increase in the RELEVANT accidents we care about. (B) is the answer.
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New post 03 Sep 2010, 00:56
For me B seems correct
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New post 06 Sep 2010, 00:38
It is B:

Assuming that the proportion of accidents involving children has remained constant, while the number of the serious accidents have increased clearly supports the conclusion that the use of safety seats decreased the fatality.
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Re: good cr please slove [#permalink]

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New post 06 Sep 2010, 10:00
B is the only one tht strengthens the argument
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Re: The use of automobile safety seats by children aged 4 and [#permalink]

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New post 26 Jun 2014, 12:36
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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New post 28 Aug 2016, 01:59
As per argument
8 yrs before no.of fatal accidents 100
Let say Children died is 10 which is 10% of total

In past 8yrs fatal accidents rose by 20% = 120
Children died increased by 10%, which is 11 in number which is 9% of 120.

Option B
The proportion of children involving in accidents is constant.
It means before 8yrs, it was 10% involvement, if it is constant, 10% of 120 is 12 which is more than 10% of deaths that mentioned in argument.

So this answer is Wrong.

====
Option C

More frequent trips means more chance of children involving in accidents, but still 10% fatality increase only due to child safety seat.

It could be wrong if they say children spent longer time in cars during the trip, and got involved in more % of accidents.

Please let me where I am going wrong.
Re: The use of automobile safety seats by children aged 4 and   [#permalink] 28 Aug 2016, 01:59

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