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Math Expert
Joined: 02 Sep 2009
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Math Expert
Joined: 02 Sep 2009
Posts: 94589
Own Kudos [?]: 643351 [0]
Given Kudos: 86728
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Location: India
Concentration: General Management
GMAT 1: 740 Q50 V40
WE:Sales (Other)
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Re: How many people are standing in the queue at the counter? [#permalink]
(1) If four more people join the queue, the number in the queue will be more than 15.

This tells us that the number of people in the queue is more than 11. However, there is no idea about the exact number

1 is insufficient

(2) If three people give up and leave the queue, the number remaining will be less than 10.

This tells us that the number of people is less than 13. However, there is no idea about the exact number

2 is insufficient

(1)+(2)

Number of people is more than 11 and less than 13

Therefore there must be 12 people in the queue

(1)+(2) is sufficient

Answer is (C)
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Re: How many people are standing in the queue at the counter? [#permalink]
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).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Re: How many people are standing in the queue at the counter? [#permalink]
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Math Expert
94589 posts