A certain company currently has how many employees? (1) If 3 : DS Archive
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# A certain company currently has how many employees? (1) If 3

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Manager
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A certain company currently has how many employees? (1) If 3 [#permalink]

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03 May 2008, 11:57
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A certain company currently has how many employees?
(1) If 3 additional employees are hired by the company and all of the present employees remain, there will be at least 20 employees in the company.
(2) If no additional employees are hired by the company and 3 of the present employees resign, there will be fewer than 15 employees in the company.
Manager
Joined: 16 Sep 2007
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03 May 2008, 15:59
1)
n>20-3
n>=17
insufficient

2)
n<15+3
n<18

insufficient

1&2)
combining n>=17 and n<18 -> 17<=n<18
we know that the number of employees must be less than 18 and at least 17
that leaves only one integer that can satisfy both conditions: 17 employees

C
Re: DS 5-15   [#permalink] 03 May 2008, 15:59
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