The table above shows the morning schedule for train X. If : GMAT Data Sufficiency (DS)
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# The table above shows the morning schedule for train X. If

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The table above shows the morning schedule for train X. If [#permalink]

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03 Oct 2009, 23:39
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DAILY TRAIN SCHEDULE
Train X
Scheduled Departure Station S at 7:08 (EST)*
Scheduled Arrival Station T at 8:10 (EST)

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

(1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S .
(2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T .
[Reveal] Spoiler: OA

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04 Oct 2009, 04:03
Either statement is sufficient

1) 1 hour and 2 minutes is exactly the time between departure and arrival according to the schedule so this means he arrived when he was supposed to.

2) He arrived at his office at 8:30 which was 20 minutes after he arrived at the station so he was at the station 8:10 which again is the time in the schedule.
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04 Oct 2009, 05:39
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sondenso wrote:
DAILY TRAIN SCHEDULE
Train X
Scheduled Departure Station S at 7:08 (EST)*
Scheduled Arrival Station T at 8:10 (EST)

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

(1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S .

(2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T .

B.
From (1) we can not conlude whether the train departed from Station S on schedule.
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05 Oct 2009, 00:40
The first statement says-
"Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S"

Suppose the train started on 7:20, so he will arrive on T at 8:22, which is not on schedule. Again it can start on time and arrive T on time, so 1 is not sufficient.

From 2, you can get that he arrived at station T at 8:10 (8:30 less 20 mins), so it is on time. Hence B is the answer.
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18 Nov 2009, 08:24
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gmat paper test code 37 section 6 q 19 [#permalink]

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22 Dec 2009, 04:57
plz explain
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Re: gmat paper test code 37 section 6 q 19 [#permalink]

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22 Dec 2009, 08:02

From (1) we can not conlude whether the train departed from Station S on schedule.
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22 Oct 2010, 16:15
That was a very good insight. I thought it was D. Kudos!!!
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25 Oct 2010, 12:23
I got B,

Is this really a 700 level question? I understand that it could be tricky but most 700 levels take a lot more thinking, or at least that is my opinion
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24 Oct 2011, 09:56
Hi ppl
I can understand only after I get a perspective to think like this.
Now, I have a fundamental question. This looks like a CR.
So, in a quantitative section, when/why should there be an approach like a CR question.
Why, is jus ok... But, when do we have to approach analytically in a quantitative question.

Thanks
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24 Oct 2011, 12:20

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

Well we are not concerned about the complete schedule but did he arrive at right schedule.....

So either statement is sufficient....D

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29 Oct 2011, 11:44
This is my first post.

To me it seems like the question is asking, did the train travel the distance between the stations in the alotted time of 62 mins.

1. Sufficient because it took him exactly 62 mins.

2. Not sufficient because we don't know which train he took, maybe he took a 7AM train and it got to station S at 8:10.
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29 Oct 2011, 12:31
prateekbhatt wrote:

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

Well we are not concerned about the complete schedule but did he arrive at right schedule.....

So either statement is sufficient....D

No. We are concerned about his arrival time, not his entire time. Statement 1 just shows that the train traveled at the correct average speed to arrive at Station T, IF, it left station S on time. But we don't know that. It could have left at anytime and still taken 1h02m to arrive but been late.

Think about it; if your flight from NY to Paris takes 8 hours, and is scheduled to arrives in Paris at 13:00 GMT; but arrives at 15:00 GMT due to a 2-hour delay at NYC, would you still say that your flight arrive in Paris ON schedule (even though it took 8 hours, which was the stated flying time)?

Last edited by alinomoto on 29 Oct 2011, 12:37, edited 1 time in total.
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29 Oct 2011, 12:35
naeeve wrote:
This is my first post.

To me it seems like the question is asking, did the train travel the distance between the stations in the alotted time of 62 mins.

1. Sufficient because it took him exactly 62 mins.

2. Not sufficient because we don't know which train he took, maybe he took a 7AM train and it got to station S at 8:10.

1 is Not suff. as explained by others before.

2. Is sufficient, because it clearly states that Juan took train X. This is given in the question stem, and is another perfect example of a deceptively simple but deviously tricky question from GMAT makers.

I have found, as I do an ever greater number of both Quant and verbal questions, that it is crucial in GMAT to read the question stem VERY VERY carefully. The devil is in the details.

Again, if you correctly distill this question down, it is not that hard at all (although still not sure if it truly is a 700+ level question).
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29 Oct 2011, 12:46
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Re: DAILY TRAIN SCHEDULE Train X Scheduled Departure Station S [#permalink]

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16 Dec 2011, 09:39
Very tricky question. Had almost clicked on D. Read the statements again...phew !!!
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Re: The table above shows the morning schedule for train X. [#permalink]

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02 Jul 2012, 02:58
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Stiv wrote:
Train Scheduled departure Station S Scheduled arrival Station T
X 7:08 (EST) 8:10 (EST)

The table above shows the morning schedule for train X. If Juan took train X on Monday morning, did he arrive at station T on schedule?
1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S.
2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T.

Hi,

nice question!

Using (1),
It mentions only the time of travel taken by Juan. If he started at 7:08 then he would have reached on time.
But time of departure is not given. Thus, Insufficient.

Using (2),
Juan arrived at office at 8:30 and 20 minutes ago he arrived at station, i.e. at 8:10. So, he arrived on time. Sufficient.

Regards,
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Re: The table above shows the morning schedule for train X. [#permalink]

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02 Jul 2012, 04:16
Hi,

You got it right. Thanks for the answer!
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04 Dec 2013, 23:28
Bunuel wrote:
sondenso wrote:
DAILY TRAIN SCHEDULE
Train X
Scheduled Departure Station S at 7:08 (EST)*
Scheduled Arrival Station T at 8:10 (EST)

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

(1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S .

(2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T .

B.
From (1) we can not conlude whether the train departed from Station S on schedule.

Old topic that I found , I feel it needs a bit of discussion

We have been able to prove that A is not sufficient , because we cannot assume that the train left Station S on time .
Which is very correct , we shouldn't assume anything, right?

For statement B why are we assuming that Train arrived at station T the same Monday morning that it left station S.
It is highly impractical but not entirely impossible that due to a calamity the train was stuck in between and it took 7 days to repair the tracks and only then the next Monday morning the train arrived at station S,coincidentally at 8:10 EST.

I think we also shouldn't assume that 8:10 Monday arrival at T is the same Monday morning it left S , it could be the next week Monday morning or even after 2 weeks.

No where in Statement B does it say Juan arrived at T the same Monday morning it left S.

Please tell me why is this scenario not possible at all.

I think there is a small scope for argument that B too is insufficient based on the logic above.

I think C would be more accurate , because if Juan arrived at 8:10 at Station T and it took 1 hour 2 minutes then Train arrived at T the same Monday morning it left S .

I vote for C.

Hope others will agree.
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05 Dec 2013, 01:35
stne wrote:
Bunuel wrote:
sondenso wrote:
DAILY TRAIN SCHEDULE
Train X
Scheduled Departure Station S at 7:08 (EST)*
Scheduled Arrival Station T at 8:10 (EST)

The table above shows the morning schedule for train X . If Juan took train X on Monday morning, did he arrive at station T on schedule?

(1) Juan arrived at station T on Monday morning 1 hour and 2 minutes after he left station S .

(2) Juan arrived at his office at 8:30 (EST) on Monday morning, which was 20 minutes after he arrived at station T .

B.
From (1) we can not conlude whether the train departed from Station S on schedule.

Old topic that I found , I feel it needs a bit of discussion

We have been able to prove that A is not sufficient , because we cannot assume that the train left Station S on time .
Which is very correct , we shouldn't assume anything, right?

For statement B why are we assuming that Train arrived at station T the same Monday morning that it left station S.
It is highly impractical but not entirely impossible that due to a calamity the train was stuck in between and it took 7 days to repair the tracks and only then the next Monday morning the train arrived at station S,coincidentally at 8:10 EST.

I think we also shouldn't assume that 8:10 Monday arrival at T is the same Monday morning it left S , it could be the next week Monday morning or even after 2 weeks.

No where in Statement B does it say Juan arrived at T the same Monday morning it left S.

Please tell me why is this scenario not possible at all.

I think there is a small scope for argument that B too is insufficient based on the logic above.

I think C would be more accurate , because if Juan arrived at 8:10 at Station T and it took 1 hour 2 minutes then Train arrived at T the same Monday morning it left S .

I vote for C.

Hope others will agree.

The questions asks: "did he arrive at station T on schedule?" We know that Scheduled Arrival at Station T is at 8:10 (EST). From (2) we get that he arrived at Station T at 8:10 (EST). Thus (2) is sufficient.
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Re: Arrival on schedule   [#permalink] 05 Dec 2013, 01:35

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