Last visit was: 17 Jul 2024, 13:29 It is currently 17 Jul 2024, 13:29
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
SORT BY:
Date
Tags:
Show Tags
Hide Tags
User avatar
Manager
Manager
Joined: 16 Feb 2011
Posts: 146
Own Kudos [?]: 959 [82]
Given Kudos: 78
Schools:ABCD
Send PM
Most Helpful Reply
User avatar
Manhattan Prep Instructor
Joined: 30 Apr 2012
Posts: 781
Own Kudos [?]: 2603 [25]
Given Kudos: 5
Send PM
GMAT Tutor
Joined: 24 Jun 2008
Posts: 4128
Own Kudos [?]: 9451 [8]
Given Kudos: 91
 Q51  V47
Send PM
General Discussion
avatar
Intern
Intern
Joined: 18 Apr 2012
Posts: 2
Own Kudos [?]: 3 [3]
Given Kudos: 0
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
3
Kudos
The author assumes that the doors are installed for security purposes, B attacks this assumption. The doors are there for keeping the in-door temperature at a appropriate level.

If there are far fewer banks in Inverness than in La Rincodanca, the argument still stands.
Intern
Intern
Joined: 14 Apr 2012
Posts: 16
Own Kudos [?]: 19 [0]
Given Kudos: 50
Location: India
Concentration: Technology, General Management
GMAT Date: 09-12-2012
GPA: 3.5
WE:Information Technology (Retail)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
A.Last year the number of bank robberies in La Rinconada was almost one-half greater than the corresponding figure for the previous year

The comparison is between Number of robberies in La Rinconada for last year and the year before that.
It doesnt talk about the number of robberies in Inverness.
Hence A doesn't weaken. In fact this option doesn't help us at all.

Hope the explanation helps.
Intern
Intern
Joined: 14 Apr 2012
Posts: 16
Own Kudos [?]: 19 [0]
Given Kudos: 50
Location: India
Concentration: Technology, General Management
GMAT Date: 09-12-2012
GPA: 3.5
WE:Information Technology (Retail)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
[quote="pallavisatsangi"]A.Last year the number of bank robberies in La Rinconada was almost one-half greater than the corresponding figure for the previous year

The comparison is between Number of robberies in La Rinconada for last year and the year before that.
It doesnt talk about the number of robberies in Inverness.
Hence A doesn't weaken. In fact this option doesn't help us at all.

Hope the explanation helps.
User avatar
Kaplan GMAT Instructor
Joined: 25 Aug 2009
Posts: 612
Own Kudos [?]: 655 [4]
Given Kudos: 2
Location: Cambridge, MA
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
2
Kudos
2
Bookmarks
Expert Reply
Note also that the number of bank robberies isn't useful unless we know the number of banks! Twice as many bank robberies in a city with four times as many banks actually represents a city that is twice as safe.

There are plenty of reasons to rule out A), since it doesn't mention Inverness at all, but the # vs. % error is a classic issue that shows up on the GMAT again and again--keep your eyes out for that pattern!
avatar
Intern
Intern
Joined: 09 May 2012
Posts: 7
Own Kudos [?]: 31 [3]
Given Kudos: 3
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
3
Kudos
answer sgould be c.

it gives an alternate reason to why there is a 2 lock system.

b is no way the correct answer.
avatar
Intern
Intern
Joined: 05 Apr 2012
Posts: 12
Own Kudos [?]: 22 [3]
Given Kudos: 12
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
1
Kudos
2
Bookmarks
Each bank in the town of La Rinconada has only a single set of locking doors at its entrance. In the town of Inverness, on the other hand, the entrances to nearly all banks are equipped with two sets of locking doors, operated by a mechanism that allows only one set of doors to be open at a time. It is clear, then, that banks in Inverness experience more robbery attempts than do those in La Rinconada, and have thus adopted the extra doors as a security measure.

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

a) Last year the number of bank robberies in La Rinconada was almost one-half greater than the corresponding figure for the previous year. Incorrect - does not talk anything about the town of Inverness.
b) Inverness is known for its harsh winters, while the climate of La Rinconada is quite temperate year-round. Correct - Inverness banks have two doors to manage the temperature inside the bank and they are not specifically meant to control robbery. It has a direct effect on the conclusion.
c) The mechanism of the double doors used by banks in Inverness allows bank security personnel to lock the doors remotely. Incorrect - looks like the answer but not. Although it looks like an alternative reason, locking remotely or manually does not matter. The point does not weaken the conclusion.
d) Bank robbery attempts are typically unsuccessful, and, even when the robbers do manage to escape with stolen money, the sum is usually quite small. Incorrect - does not weaken. sum of money does not matter.
e) Inverness has almost twice as many police officers per capita as does La Rinconada. Incorrect - number of police officers does not affect the conclusion.
avatar
Intern
Intern
Joined: 24 Feb 2010
Posts: 7
Own Kudos [?]: 20 [2]
Given Kudos: 0
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
2
Kudos
b) Inverness is known for its harsh winters, while the climate of La Rinconada is quite temperate year-round.
c) The mechanism of the double doors used by banks in Inverness allows bank security personnel to lock the doors remotely.

This is not a good question because one has to assume a lot to mark the answer as correct one.
For b, one has already mentioned that harsh climate is the reason. What if the temperature control systems are well designed to take care of a spate of cold air entering the building when the door is opened.
For C, one can assume that a small team of security teams can manage the security of the banks by remote operation of the gates. A large number of robberies can not be the only reason behind having such 2-door systems.
avatar
Intern
Intern
Joined: 06 Jul 2012
Posts: 18
Own Kudos [?]: 79 [0]
Given Kudos: 36
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
B clearly is the winner.

It provides different cause than that mentioned in the Premise. The author while arriving at a conclusion believe that only 1 cause can lead to the effect. If different cause is having the same intended effect, author's conclusion will gets weakened.
avatar
Intern
Intern
Joined: 03 Jan 2012
Posts: 20
Own Kudos [?]: 24 [0]
Given Kudos: 5
Location: United States
Concentration: Leadership, Finance
GMAT 1: 660 Q49 V31
GPA: 3.5
WE:Engineering (Computer Software)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
I guess 'c' should be the answer. B depends again on the assumption that more number of doors help temperature to be at appropriate level, and this assumption is no where clearly stated which makes it a weak link.

Whilst in c, the reason for using 2doors is clearly stated which attacks the assumption of the author. I feel c is the answer.
User avatar
Senior Manager
Senior Manager
Joined: 24 Mar 2010
Posts: 332
Own Kudos [?]: 200 [3]
Given Kudos: 4
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
3
Kudos
If the official answer really is B, this is a terrible question. Answer choice C gives a very plausible reason why the bank set up two doors rather than just one. For B, we have to make a huge assumption that the number of door locks is directly related to the quality of weather control inside a bank.
GMAT Club Legend
GMAT Club Legend
Joined: 19 Feb 2007
Status: enjoying
Posts: 5264
Own Kudos [?]: 42142 [3]
Given Kudos: 422
Location: India
WE:Education (Education)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
3
Kudos
Expert Reply
The point here is that the conclusion says that the double- door system is a security measure. We need to weaken this thinking. So, any choice that augments the security aspect is irrelevant. We need to look a totally different reason other than security against robbery or any such things. Therefore, B simply weighs in. We can ignore C, because it strengthens the argument that extra security measures are required in the second town
B is the correct choice
Director
Director
Joined: 03 Feb 2011
Status:Retaking after 7 years
Posts: 860
Own Kudos [?]: 4527 [2]
Given Kudos: 221
Location: United States (NY)
Concentration: Finance, Economics
GMAT 1: 720 Q49 V39
GPA: 3.75
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
2
Kudos
Either it is a very good question in which the correct answer wins by a margin or its really a bad one in which the correct answer makes a lot of assumptions.
avatar
Intern
Intern
Joined: 27 Dec 2012
Posts: 11
Own Kudos [?]: 3 [1]
Given Kudos: 2
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
1
Kudos
I think by providing B as the answer, the question maker somewhat assumes people understand how climate control is done in banks because the answer neither states or mentions anything such ... Could we please remove it or provide a more approachable answer?

Posted from GMAT ToolKit
User avatar
Retired Moderator
Joined: 16 Jun 2012
Posts: 869
Own Kudos [?]: 8615 [0]
Given Kudos: 123
Location: United States
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
OA is B with the assumption that people know why double-door system is better than single-door system in controlling temperature. Frankly, I don't know why double-door is better. Just my own opinion, this assumption is too far and is not Gmat-like. Btw, OA is OA.
User avatar
Manager
Manager
Joined: 03 Dec 2012
Posts: 144
Own Kudos [?]: 855 [0]
Given Kudos: 291
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
Really had to think my guts out to figure this answer. "Doors used as thermostat" Who would have thought!!!
Retired Moderator
Joined: 04 Jun 2013
Status:Getting strong now, I'm so strong now!!!
Affiliations: National Institute of Technology, Durgapur
Posts: 336
Own Kudos [?]: 1922 [0]
Given Kudos: 92
Location: United States (DE)
GPA: 3.32
WE:Information Technology (Health Care)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
Thanks kyle for the much needed guidance.

Posted from my mobile device
Retired Moderator
Joined: 17 Sep 2013
Posts: 277
Own Kudos [?]: 1243 [2]
Given Kudos: 139
Concentration: Strategy, General Management
GMAT 1: 730 Q51 V38
WE:Analyst (Consulting)
Send PM
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
2
Kudos
KyleWiddison wrote:
voodoochild wrote:
Each bank in the town of La Rinconada has only a single set of locking doors at its entrance. In the town of Inverness, on the other hand, the entrances to nearly all banks are equipped with two sets of locking doors, operated by a mechanism that allows only one set of doors to be open at a time. It is clear, then, that banks in Inverness experience more robbery attempts than do those in La Rinconada, and have thus adopted the extra doors as a security measure.

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

a) Last year the number of bank robberies in La Rinconada was almost one-half greater than the corresponding figure for the previous year.
b) Inverness is known for its harsh winters, while the climate of La Rinconada is quite temperate year-round.
c) The mechanism of the double doors used by banks in Inverness allows bank security personnel to lock the doors remotely.
d) Bank robbery attempts are typically unsuccessful, and, even when the robbers do manage to escape with stolen money, the sum is usually quite small.
e) Inverness has almost twice as many police officers per capita as does La Rinconada.

Why is A) not a weakener? If the # of bank robberies in La Rin is > that in Inverness, the security is obviously out of question.


I'm responding to a PM on this one. I will start by saying the correct answer will be more logical to people who live in climates where double doors are used to maintain inside temperatures, but you can get to the answer by working through your CR process.

Assumptions fill in the logical gaps between premises and conclusions. If you want to weaken an argument you need to attack an assumption. In this question the premises state that Inverness has double doors and La Rinconada has single doors. The conclusion states that the double doors were for robbery prevention against Inverness' higher robbery rate. How do we get from double doors to robbery? We are assuming that the double doors are a method for preventing robbery (this is the logical gap between the premises and the conclusion).

Answer choices A, D, and E can quickly be eliminated for irrelevance to the issue of doors and robbery prevention. Since the correct answer is B, let's first analyze C. Choice C states that the double doors can be locked remotely. That seems to strengthen the assumption that the double doors are for robbery prevention. That choice feels very relevant to the argument but it's relevant in the wrong direction. We are trying to weaken the argument so we have to attack the assumption that doors are for robbery prevention, not strengthen it.

That only leaves us with choice B. Again, I will admit this requires a bit of a mental stretch for some, but can you think of the impact that climate has on door selection or use? Sure, when it's warm I sometimes leave my door open, but when it's cold or stormy I will absolutely close my door. This choice does provide information to suggest that the double doors may not have been installed for robbery prevention and instead as a protection against climate.

Don't be too quick to call some answer choices like this one out of scope. These questions can introduce new information not previously stated in the argument. The question is whether that new information attacks an assumption and therefore weakens the argument.

KW


I have no idea how these doors work..Though I did scratch my head over it for a while(I knew this was the answer..MGMAT is too predictable on such weird options)
'One should not apply external knowledge on CR and RC questions' is the most basic rule in solving these
Secondly,
For C, the remote locking system makes sense if you think that banks in city I are just plain techsavy (which is again an assumption...but what is not )
For B, it needs external info & without that knowledge it is just a sentence that has no effect on the question
GMAT Club Bot
Re: Each bank in the town of La Rinconada has only a single set of locking [#permalink]
 1   2   3   
Moderators:
GMAT Club Verbal Expert
6984 posts
GMAT Club Verbal Expert
236 posts
CR Forum Moderator
824 posts