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# For the last five years, the XYZ Courier Company has made

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For the last five years, the XYZ Courier Company has made [#permalink]

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16 Dec 2011, 04:58
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Question Stats:

54% (02:22) correct 46% (01:48) wrong based on 159 sessions

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Here is a MGMAT question that I got in my CAT test. I want to believe MGMAT knows (way!!!) more about CR than I do. But I can't understand their logic on this question. Can someone please enlighten me?
-------------------------------------------------------------------------------------------------------------
For the last five years, the XYZ Courier Company has made regular delivery trips between Town A and Town B. The average time taken by the company’s drivers to drive the round trip between the two towns, excluding the time taken for loading, unloading, and delivery, over that period has been 80 minutes. John, a driver for XYZ, needs to make a personal trip between the two towns; he figures that he should allow approximately 80 minutes for the round trip.

Which of the following, if true, does not call John’s conclusion into question?

A) The route between Town A and Town B has been plagued by increasing congestion over the last five years, as the area's population has doubled during that time.

B) Most of XYZ’s courier vehicles are heavy trucks, for which speed limits are lower than for passenger vehicles.

C) Many of the packages carried by XYZ between Town A and Town B are large, high-security packages, for which the processes of loading, unloading, and delivery can take up to half the length of the trip itself.

D) John will make his personal trip at an hour when XYZ does not make delivery trips.

E) Before a freeway was built between Town A and Town B two years ago, the only routes between the two towns were state highways with multiple traffic lights and reduced-speed downtown zones.
[Reveal] Spoiler: OA

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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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16 Dec 2011, 06:41
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As the packing, loading, and delivery time is not taken into account for calculating the average time that John uses as a reference, option (C) should be the correct choice. Option (C) refers to the packing, loading, and delivery time which is irrelevant to the calculation, and so does not call John's conclusion into question.

All of the other choices create a chance that the time taken as reference by John is not correct due to various factors.
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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16 Dec 2011, 08:17
First thing, please give your reasoning why you do not understand the choices. Which choice you reasoning said correct. I faced this one yesterday, and choice C is really the best choice, which does not affect anything to the personal trip of driver mentioned in the argument.
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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16 Dec 2011, 09:44
Thanks for the quick responses guys.

I was struggling to make up my mind between B and E and they I saw the answer C which surprised me. I appears from your responses that you are dead sure C is a good choice. So I am thinking my approach towards CR questions is wrong.

"Which of the following, if true, does not call John’s conclusion into question?"

I read this as asking, which of the below if true would leave John with enough time to complete the trip?

Answer choice B suggests that John can travel faster in his personal vehicle and hence will complete the trip in shorter amount of time

Answer choice E suggests that the 5 year average of 80 mins is more constraining than what it takes now (since the freeway was built 2 years ago)

Am I completely out of my mind for thinking that way, or (though highly unlikely ) anyone else out there read this question like me

Thanks
Vijay
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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16 Dec 2011, 21:09
"does not call John’s conclusion into question" means which will not affect the John conclusion and option C is correct, since it will not modify the John calculation of 80 minute for round trip.
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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17 Dec 2011, 08:05
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vbetanabhatla wrote:
Thanks for the quick responses guys.

I was struggling to make up my mind between B and E and they I saw the answer C which surprised me. I appears from your responses that you are dead sure C is a good choice. So I am thinking my approach towards CR questions is wrong.

"Which of the following, if true, does not call John’s conclusion into question?"

I read this as asking, which of the below if true would leave John with enough time to complete the trip?

Answer choice B suggests that John can travel faster in his personal vehicle and hence will complete the trip in shorter amount of time

Answer choice E suggests that the 5 year average of 80 mins is more constraining than what it takes now (since the freeway was built 2 years ago)

Am I completely out of my mind for thinking that way, or (though highly unlikely ) anyone else out there read this question like me

Thanks
Vijay

Your paraphrase into this question "I read this as asking, which of the below if true would leave John with enough time to complete the trip?" is incorrect.

"Which of the following, if true, does not call John’s conclusion into question?" maybe become STRENGTHEN or NOT WEAKEN. The best way with this kind of question is use POE, eliminating all answer that call John's conclusion into question? Mean find all choice WEAKEN the conclusion.

Your reasoning in choice B and E is correct. Both of two choice WEAKEN the conclusion. So, eliminate.

Note: "Not attack" does not mean "defense". It maybe both "defense" and "stay".

Hope that helps.
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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17 Dec 2011, 08:34
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vbetanabhatla wrote:
Here is a MGMAT question that I got in my CAT test. I want to believe MGMAT knows (way!!!) more about CR than I do. But I can't understand their logic on this question. Can someone please enlighten me?
-------------------------------------------------------------------------------------------------------------
For the last five years, the XYZ Courier Company has made regular delivery trips between Town A and Town B. The average time taken by the company’s drivers to drive the round trip between the two towns, excluding the time taken for loading, unloading, and delivery, over that period has been 80 minutes. John, a driver for XYZ, needs to make a personal trip between the two towns; he figures that he should allow approximately 80 minutes for the round trip.

Which of the following, if true, does not call John’s conclusion into question?

A) The route between Town A and Town B has been plagued by increasing congestion over the last five years, as the area's population has doubled during that time.

B) Most of XYZ’s courier vehicles are heavy trucks, for which speed limits are lower than for passenger vehicles.

C) Many of the packages carried by XYZ between Town A and Town B are large, high-security packages, for which the processes of loading, unloading, and delivery can take up to half the length of the trip itself.

D) John will make his personal trip at an hour when XYZ does not make delivery trips.

E) Before a freeway was built between Town A and Town B two years ago, the only routes between the two towns were state highways with multiple traffic lights and reduced-speed downtown zones.

John's conclusion - it should take same amount of time for his personal trip as it does for the deliveries.
Question - Which one does NOT WEAKEN John's conclusion.

A) The average time taken over the past five years has been 80 minutes. The population and congestion also has increased over the past five years. Worst case scenario - population stayed the same over 4 out of 5 years, but doubled just last year. So, say it used to take 40 minutes before and now takes about 120 minutes to deliver. Then it may weaken John's estimates that he can complete the trip in 80 minutes.

B) Delivery trucks are heavy and slow. Then they take more time than John's car to reach the destination. John would make the trip in less than 80 minutes. This strengthens his conclusion.

C) We know that the time taken for loading and unloading is not taken into consideration while calculating average delivery time for the company. This neither strengthens, nor weakens John's conclusion.

D) We don't know for sure what the consequences of this is going to be. If John is making personal trip at a busier hour, he would need more time, if not, he may complete the trip in less than 80 minutes. This can be viewed as an outside the scope option.

E) This means it used to take more than 80 minutes the first three years of the last five years, now it takes less. So, John would be able to complete the trip in less than the average time of 80 minutes.

Only (C) does NOT WEAKEN the conclusion and hence the right answer.

Hope this helps.
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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17 Dec 2011, 10:13
Thanks guys.

I get it now (after forcing myself to think the way rest of the world is reading the question).Earlier, I read the question as "which of these strengthen his conclusion"?
I guess I should be reading the question as "which of these neither strengthen nor weaken his conclusion?"
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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17 Dec 2011, 20:51
vbetanabhatla wrote:
I guess I should be reading the question as "which of these neither strengthen nor weaken his conclusion?"

Nope, NOT call into question mean NOT WEAKEN. NOT WEAKEN is NOT WEAKEN.

NOT WEAKEN cannot be NOT STRENGTHEN.

Your guess is only correct in this question. It will be better for you to read the CR Bible
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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18 Dec 2011, 08:24
tuanquang269 wrote:
vbetanabhatla wrote:
I guess I should be reading the question as "which of these neither strengthen nor weaken his conclusion?"

Nope, NOT call into question mean NOT WEAKEN. NOT WEAKEN is NOT WEAKEN.

NOT WEAKEN cannot be NOT STRENGTHEN.

Your guess is only correct in this question. It will be better for you to read the CR Bible

I have the MGMAT CR Guide, but did not think it was very useful. I love the rest of the guides though.
Do you know if CR Bible is vastly different from MGMAT CR???
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Re: Do you agree with MGMAT's answer choice on this CR? [#permalink]

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26 Dec 2011, 10:27
C
We need to find an option which will NOT make john’s conclusion look wrong that is his idea that it will take his personnel vehicle approximately same time as the delivery vehicle
A if true makes john decision wrong
B again same if true will make john look wrong
D ) and E also suffer from making john judgment look wrong
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Re: For the last five years, the XYZ Courier Company has made [#permalink]

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25 Jan 2015, 04:56
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Re: For the last five years, the XYZ Courier Company has made [#permalink]

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08 Mar 2015, 21:11
Here, C is the only option which talks about loading, unloading and delivery. If this goes beyond half the length of the trip ( in terms of time) then definitely it will effect the estimated time.

hope this helps!
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Re: For the last five years, the XYZ Courier Company has made [#permalink]

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11 Mar 2016, 09:21
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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Re: For the last five years, the XYZ Courier Company has made   [#permalink] 11 Mar 2016, 09:21
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