Although the discount stores in Goreville s central shopping : GMAT Critical Reasoning (CR)
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Although the discount stores in Goreville s central shopping

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Although the discount stores in Goreville s central shopping [#permalink]

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27 Jul 2007, 04:51
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Although the discount stores in Goreville’s central shopping district are expected to close within five years as a result of competition from a SpendLess discount department store that just opened, those locations will not stay vacant for long. In the five years since the opening of Colson’s, a nondiscount department store, a new store has opened at the location of every store in the shopping district that closed because it could not compete with Colson’s.

Which of the following, if true, most seriously weakens the argument?

A. Many customers of Colson’s are expected to do less shopping there than they did before the SpendLess store opened.

B. Increasingly, the stores that have opened in the central shopping district since Colson’s opened have been discount stores.

C. At present, the central shopping district has as many stores operating in it as it ever had.

D. Over the course of the next five years, it is expected that Goreville’s population will grow at a faster rate than it has for the past several decades.

E. Many stores in the central shopping district sell types of merchandise that are not available at either SpendLess or Colson’s.

Q.11

Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

Which of the following is an assumption on which the argument depends?

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause.

B. There are no chemical fumigants that are completely safe for workers in grainprocessing plants.

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve dama
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27 Jul 2007, 05:15
I say B.

The stores that closed because of Colson's were replaced with discount stores. But if those discount stores will be closed because of Spendless, then there is no reason to think that in five years, the stores will be replaced with other discount stores.
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27 Jul 2007, 05:57
aishji, Guys here usually create one thread per question!

When a non-discount dept store opens, new store open for any closed ones.

Prediction: Same will happen even for new upcoming discount-departmental store.

We need to pick an option that weakens the above argument.

B. Just discredit the information provided by saying those stores open were all discount stores. So, it probably wont happen with the new discount-store.

Q.11
They made a switch two years ago, so, it can’t be ethylene di-bromide that caused the problems now. Has to be the new chemicals.
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27 Jul 2007, 07:18
ajisha wrote:
Although the discount stores in Goreville’s central shopping district are expected to close within five years as a result of competition from a SpendLess discount department store that just opened, those locations will not stay vacant for long. In the five years since the opening of Colson’s, a nondiscount department store, a new store has opened at the location of every store in the shopping district that closed because it could not compete with Colson’s.

Which of the following, if true, most seriously weakens the argument?

A. Many customers of Colson’s are expected to do less shopping there than they did before the SpendLess store opened.

B. Increasingly, the stores that have opened in the central shopping district since Colson’s opened have been discount stores.

C. At present, the central shopping district has as many stores operating in it as it ever had.

D. Over the course of the next five years, it is expected that Goreville’s population will grow at a faster rate than it has for the past several decades.

E. Many stores in the central shopping district sell types of merchandise that are not available at either SpendLess or Colson’s.

Q.11

Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

Which of the following is an assumption on which the argument depends?

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause.

B. There are no chemical fumigants that are completely safe for workers in grainprocessing plants.

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve dama

B for first question - reason has been explained by others.

C for second question - if it does take two years or longer before the damage to be detectable it's possible that those infected two years ago are now being diagonosed - and hence it's the old effect that's continuing and not caused by the new chemical. Clearly then it must be assumed that it doesnt take as long as two years for the damage to be detectable.

Let us know the OA pls.
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27 Jul 2007, 08:37
First one is B

and second one is C
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27 Jul 2007, 09:19
Thanks Guys.

I did not understand argument for first but i get it now.

OA for first is : B

For second i have wrong OA from set 22. It says A, which is not right.
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27 Jul 2007, 10:24
B and C for me as well.
A for the second question does not seem correct.
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09 Aug 2007, 08:02
Q.11

Because ethylene dibromide, a chemical used to fumigate grain, was blamed for the high rate of nerve damage suffered by people who work in grain-processing plants, many such plants switched to other chemical fumigants two years ago. Since then, however, the percentage of workers at these plants who were newly diagnosed with nerve damage has not dropped significantly. Therefore, either ethylene dibromide was wrongly blamed or else the new chemicals also cause nerve damage.

Which of the following is an assumption on which the argument depends?

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause.

B. There are no chemical fumigants that are completely safe for workers in grain processing plants.

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable.

D. Workers at grain-processing plants typically continue to work there even after being diagnosed with nerve damage.

E. Workers at grain-processing plants that still use ethylene dibromide continue to have a high rate of nerve dama[/quote]

What is the source of this question ? None of the options seem to be correct..

A and E are straight out.

B,C and D look better but none of them fits well.

If we look at the argument, the author says that either ED was wrongly blamed or new chemical also causes nervous damage.

Evidence : The % of workers suffering from the nervous damage is not reduced significantly.

What could be the assumptions :
Chemicals are the only cause of damage and nothing else.

D sort of weakens the argument.
B strengthens the argument
C does not connects well...
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15 May 2010, 10:06
Hi,

IMO C but lets try to analyze why A is stated as OA.

Argument says:
1. ED is blamed for high rate og nervous damage.
2. 2 yrs ago, new chemicals used.
3. After 2 yrs, % of workers is almost same.

Conclusion - Either ED is wrongly blamed OR new chemicals are responsible. Lets break this conclusion:
Either ED is wrongly blamed [means new chemicals or some other factors are the cause for the damage]
New chemicals are responsible [This is also the same as above]

So, I think conclusion becomes - new chemicals rather than ED is to be blamed.

Let's have some food for thought - what could be the assumptions:
a. After (3), the number of workers and no. of workers suffering from the nervous damage remained constant. [Option (a) is not the strongest assumption as the %age of workers suffering is same]
b. ED or the new chemicals are not the only factors causing the damage.
c. For ED to be blamed, the results of last usage of ED should be same throught the 2 yrs in context.

Let's check which answer choices matches these 2 options (b) and (c).

A. If the new chemicals cause nerve damage, the nerve damage caused would be different from any nerve damage that ethylene dibromide may cause. [We dont have the different symptoms for different chemicals. [We dont have this new info in the argument. Incorrect]

C. If ethylene dibromide causes nerve damage, it does not take two years or longer for that damage to become detectable. [It matches option (c). Correct]
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14 Sep 2011, 09:29
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Re: CR   [#permalink] 14 Sep 2011, 09:29
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