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A and B are in a line to purchase tickets. How many people are in the

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Bunuel
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A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   15 Sep 2020, 10:00
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A
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C
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E

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45% (medium)

Question Stats:

55% (01:00) correct 45% (00:57) wrong based on 93 sessions
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A and B are in a line to purchase tickets. How many people are in the line?

(1) There are 15 people behind A and 15 people in front of B.
(2) There are 5 people between A and B.
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Official Answer
E
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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   15 Sep 2020, 10:08
A and B are in a line to purchase tickets. How many people are in the line?

(1) There are 15 people behind A and 15 people in front of B.
(2) There are 5 people between A and B.

Explanation:

S1: As no. Of people between A& B and relative sequence of A& B not given thus not possible to tell exact number.

Hence S1 insufficient.

S2: although no. Of people between A& B given but people behind and ahead information is not provided.

Hence S2 insufficient.

Combining S1 & S2

As standing sequence of A& B is not given i.e whether A is ahead of B or vice versa thus it is impossible to tell total no. Of people in line.

Hence E is the correct answer.

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Atul Pandey

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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   15 Sep 2020, 10:15
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Bunuel wrote:
A and B are in a line to purchase tickets. How many people are in the line?

(1) There are 15 people behind A and 15 people in front of B.
(2) There are 5 people between A and B.


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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   15 Sep 2020, 12:12
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File comment: So, I think option E.
20200916_004050.jpg
20200916_004050.jpg [ 1.18 MiB | Viewed 2805 times ]

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A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   Updated on: 27 Sep 2020, 00:09
Bunuel wrote:
A and B are in a line to purchase tickets. How many people are in the line?

(1) There are 15 people behind A and 15 people in front of B.
(2) There are 5 people between A and B.


Statement 1 ) There are 15 people behind A and 15 people in front of B.

Attachment:
statement 1.png
statement 1.png [ 10.5 KiB | Viewed 2471 times ]


statement 2 ) There are 5 people between A and B.

Attachment:
statement 2.png
statement 2.png [ 24.08 KiB | Viewed 2437 times ]

1+2

Attachment:
Gmat club.png
Gmat club.png [ 25.47 KiB | Viewed 2123 times ]




Hence answer is E.



Edit: Error corrected thanks to IanStewart for pointing it out

Originally posted by stne on 19 Sep 2020, 22:06.
Last edited by stne on 27 Sep 2020, 00:09, edited 1 time in total.
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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   20 Sep 2020, 05:11
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stne wrote:
Dear IanStewart Sir,
Can you please check whether I am making a mistake anywhere.
I got C as the answer well as OA is marked as E. Thank you.


I'm not sure why you've declared one case impossible when you used both Statements. The answer is E because we don't know if A is in front of B in line, or if A is behind B in line. So you could have this line, where each dot is a person:

• • • • • • • • • A • • • • • B • • • • • • • • • 

and then there are five people between A and B, 15 behind A (including B), and 15 ahead of B (including A), or you could have this line

• • • • • • • • • • • • • • • B • • • • • A • • • • • • • • • • • • • • • 

and again there are five people between A and B, 15 behind A, and 15 ahead of B. But this line is much longer than the first one, so the answer is E.
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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink] New post   20 Sep 2020, 09:56
IanStewart wrote:
stne wrote:
Dear IanStewart Sir,
Can you please check whether I am making a mistake anywhere.
I got C as the answer well as OA is marked as E. Thank you.


I'm not sure why you've declared one case impossible when you used both Statements. The answer is E because we don't know if A is in front of B in line, or if A is behind B in line. So you could have this line, where each dot is a person:

• • • • • • • • • A • • • • • B • • • • • • • • • 

and then there are five people between A and B, 15 behind A (including B), and 15 ahead of B (including A), or you could have this line

• • • • • • • • • • • • • • • B • • • • • A • • • • • • • • • • • • • • • 

and again there are five people between A and B, 15 behind A, and 15 ahead of B. But this line is much longer than the first one, so the answer is E.


Right. Thank you Sir, Silly of me to goof up. Don't know why I thought there cannot be 15 people behind A with includes B.
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Re: A and B are in a line to purchase tickets. How many people are in the [#permalink]
20 Sep 2020, 09:56
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