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# Tom and Jack are in a line to purchase iphones. How many

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Manager
Status: Single
Joined: 05 Jun 2011
Posts: 119

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Location: Shanghai China
Tom and Jack are in a line to purchase iphones. How many [#permalink]

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09 Jul 2011, 03:43
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Difficulty:

55% (hard)

Question Stats:

53% (00:47) correct 47% (00:37) wrong based on 30 sessions

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Tom and Jack are in a line to purchase iphones. How many people are in the line?

(1) There are 20 people behind Tom and 20 people in front of Jack.

(2) There are 5 people between Tom and Jack.

My thought is since there are 20 people behind Tom and 20 people infront of Jack, so there are 19 people between Tom and Jack.

(2) I think it is correct. Because total people would be 7.
[Reveal] Spoiler: OA

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Senior Manager
Joined: 03 Mar 2010
Posts: 422

Kudos [?]: 361 [0], given: 22

Schools: Simon '16 (M)
Re: Data sufficiency problem, pls help to explain [#permalink]

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09 Jul 2011, 04:17
(1) There are 20 people behind Tom and 20 people in front of Jack.

20 T J 20
Total = 42

20 T 1 J 20
Total = 43

2) There are 5 people between Tom and Jack.

T 5 J
Total = 7
20 T 5 J
Total = 27
Not sufficient.

Together, 20 T 5 J 20
Total = 47
14 J 5 T 14
Total = 35

OA E
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Kudos [?]: 361 [0], given: 22

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Re: Tom and Jack are in a line to purchase iphones. How many [#permalink]

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14 Sep 2017, 03:23
Hello from the GMAT Club BumpBot!

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: Tom and Jack are in a line to purchase iphones. How many   [#permalink] 14 Sep 2017, 03:23
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