Interstate highways are the main travel routes for many : GMAT Critical Reasoning (CR)
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# Interstate highways are the main travel routes for many

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Interstate highways are the main travel routes for many [#permalink]

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04 Sep 2011, 10:36
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Interstate highways are the main travel routes for many commercial and private travelers. These highways include many signs that must be repaired by dedicated repair crews. Without this maintenance, the highway signs would soon become dangerous and eventually become unusable. Therefore, the government must continue to employ these dedicated repair crews.

Which of the following, if true, would most seriously weaken the conclusion above?

These sign-repair crews are more expensive than the repair crews that maintain the roads.
The sign-repair crews occasionally block traffic during the course of their work.
Due to developments in technology, new signs can now be made and installed for less than the cost of repairing the old signs.
When maintenance by these repair crews is performed regularly, signs last much longer.
When highway signs deteriorate, the accident rate increases.
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Re: CR - 700 level - signs [#permalink]

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04 Sep 2011, 11:33
Clearly (C)

If new signs can be made and installed for less than the cost of repairing the old signs, the people who maintain the old signs are redundant, and should not be employed.
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Re: CR - 700 level - signs [#permalink]

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04 Sep 2011, 13:11
+1 C.
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Re: CR - 700 level - signs [#permalink]

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04 Sep 2011, 13:13
Agree with C
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 06:35
+1 for C
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 08:14
GyanOne wrote:
Clearly (C)

If new signs can be made and installed for less than the cost of repairing the old signs, the people who maintain the old signs are redundant, and should not be employed.

Would you have put B as a contender. B statement would somehow weaken the argument by claiming that its a bad idea to put repair crews on work because it causes traffic jams and hence may be(i repeat may be) dangerous.
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 10:20
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Hi Optimus,

We can rule out B because it requires too much speculation. If you have to say "maybe (just maybe)," you should probably find another answer choice. The argument says the unrepaired signs are dangerous, and the repair eliminates the danger. We can't weaken this by introducing something that might possibly under some circumstances be dangerous. Or to add a real-life angle: wouldn't you rather have crews block the road than drive under a sign that was likely to fall on you?

C, on the other hand, shows us an alternative that is clearly preferable to the conclusion. We get new, safer signs, and we don't have to pay as much. There is no speculation required here!
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 10:45
agreed with C
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 10:47
DmitryFarber wrote:
Hi Optimus,

We can rule out B because it requires too much speculation. If you have to say "maybe (just maybe)," you should probably find another answer choice. The argument says the unrepaired signs are dangerous, and the repair eliminates the danger. We can't weaken this by introducing something that might possibly under some circumstances be dangerous. Or to add a real-life angle: wouldn't you rather have crews block the road than drive under a sign that was likely to fall on you?

C, on the other hand, shows us an alternative that is clearly preferable to the conclusion. We get new, safer signs, and we don't have to pay as much. There is no speculation required here!

Thanks..That is what i was thinking too..Too much speculation on GMAT mostly leads to wrong answers..
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 11:34
road signs or no... my CR signs lead me to C !!
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Re: CR - 700 level - signs [#permalink]

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08 Sep 2011, 16:58
bschool83 wrote:
Interstate highways are the main travel routes for many commercial and private travelers. These highways include many signs that must be repaired by dedicated repair crews. Without this maintenance, the highway signs would soon become dangerous and eventually become unusable. Therefore, the government must continue to employ these dedicated repair crews.

Which of the following, if true, would most seriously weaken the conclusion above?

These sign-repair crews are more expensive than the repair crews that maintain the roads.
The sign-repair crews occasionally block traffic during the course of their work.
Due to developments in technology, new signs can now be made and installed for less than the cost of repairing the old signs.
When maintenance by these repair crews is performed regularly, signs last much longer.
When highway signs deteriorate, the accident rate increases.

C explains why continuing with the dedicated crew might be a bad idea.
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Re: CR - 700 level - signs [#permalink]

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09 Sep 2011, 14:15
I picked C. There is no more need for the maintenance crew.
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Re: CR - 700 level - signs [#permalink]

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09 Sep 2011, 14:26
Agree with Choice C.
In My Opinion, Choice B is weaker than Choice C as reduction of mean repair time can be assumed by choosing C than B.
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Re: CR - 700 level - signs [#permalink]

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10 Sep 2011, 07:06
C
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Re: CR - 700 level - signs [#permalink]

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11 Sep 2011, 01:12
Alternate explanation to weaken the argument. C is the answer...
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Re: CR - 700 level - signs [#permalink]

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11 Sep 2011, 03:59
+1 for C
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Re: CR - 700 level - signs [#permalink]

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12 Sep 2011, 21:54
If you want to follow up with a suspiciously similar problem, try #30 in the Official Guide.
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Re: CR - 700 level - signs [#permalink]

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13 Sep 2011, 01:24
C, easily!
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Re: CR - 700 level - signs [#permalink]

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13 Sep 2011, 10:51
Do not know if this is 700 level but C is the clear choice
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Re: CR - 700 level - signs [#permalink]

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14 Sep 2011, 02:18
Bowtie wrote:
Do not know if this is 700 level but C is the clear choice

clearly C but do u guys think that this question is 700+ ones?? i have serious doubt..

Re: CR - 700 level - signs   [#permalink] 14 Sep 2011, 02:18

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