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Critical Reasoning Doubt

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Joined: 09 May 2016
Posts: 46
Critical Reasoning Doubt [#permalink]

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New post 14 Mar 2017, 04:10
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Difficulty:

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Question Stats:

67% (01:58) correct 33% (00:00) wrong based on 3 sessions

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Exposure to certain chemicals commonly used in elementary schools as cleaners or
pesticides causes allergic reactions in some children. Elementary school nurses in
Renston report that the proportion of schoolchildren sent to them for treatment of
allergic reactions to those chemicals has increased significantly over the past ten
years. Therefore, either Renston’s schoolchildren have been exposed to greater
quantities of the chemicals, or they are more sensitive to them than schoolchildren
were ten years ago.

Which of the following is an assumption on which the argument depends?
(A) The number of school nurses employed by Renston’s elementary
schools has not decreased over the past ten years.
(B) Children who are allergic to the chemicals are no more likely than other
children to have allergies to other substances.
(C) Children who have allergic reactions to the chemicals are not more
likely to be sent to a school nurse now than they were ten years ago.
(D) The chemicals are not commonly used as cleaners or pesticides in
houses and apartment buildings in Renston.
(E) Children attending elementary school do not make up a larger
proportion of Renston’s population now than they did ten years ago.

Why is option A wrong? If the number of nurses would come down wont the number of kids reporting to them would increase .
E- Earlier 10 nurse ,10 kids ;1 kid per nurse
Now 5 nurse, same 10 kids;2 kids per nurse.

Please help to understand
[Reveal] Spoiler: OA
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Re: Critical Reasoning Doubt [#permalink]

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New post 14 Mar 2017, 04:20
KARISHMA315 wrote:
Exposure to certain chemicals commonly used in elementary schools as cleaners or
pesticides causes allergic reactions in some children. Elementary school nurses in
Renston report that the proportion of schoolchildren sent to them for treatment of
allergic reactions to those chemicals has increased significantly over the past ten
years. Therefore, either Renston’s schoolchildren have been exposed to greater
quantities of the chemicals, or they are more sensitive to them than schoolchildren
were ten years ago.

Which of the following is an assumption on which the argument depends?
(A) The number of school nurses employed by Renston’s elementary
schools has not decreased over the past ten years.
(B) Children who are allergic to the chemicals are no more likely than other
children to have allergies to other substances.
(C) Children who have allergic reactions to the chemicals are not more
likely to be sent to a school nurse now than they were ten years ago.
(D) The chemicals are not commonly used as cleaners or pesticides in
houses and apartment buildings in Renston.
(E) Children attending elementary school do not make up a larger
proportion of Renston’s population now than they did ten years ago.

Why is option A wrong? If the number of nurses would come down wont the number of kids reporting to them would increase .
E- Earlier 10 nurse ,10 kids ;1 kid per nurse
Now 5 nurse, same 10 kids;2 kids per nurse.

Please help to understand

Hi KARISHMA315,

This question is already discussed in the forum. Please check Exposure to certain chemicals commonly used in elementary
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Re: Critical Reasoning Doubt [#permalink]

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New post 14 Mar 2017, 06:15
This is a repeat question. Please check rules before posting new topic.
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Re: Critical Reasoning Doubt [#permalink]

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New post 14 Mar 2017, 13:59
This question has been discussed previously here:
https://gmatclub.com/forum/exposure-to- ... 13766.html

Thank you
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Re: Critical Reasoning Doubt   [#permalink] 14 Mar 2017, 13:59
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