If an employee of Company A is selected at random for a : DS Archive
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If an employee of Company A is selected at random for a

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If an employee of Company A is selected at random for a [#permalink]

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12 Oct 2004, 12:02
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If an employee of Company A is selected at random for a survey, what is the probability that the employee is an executive?
(1) Company A employs 462 people.
(2) The ratio of the number of employees of Company A who are executives to the number of employees of Company A who are not executives is 2:9.
Manager
Joined: 18 Sep 2004
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12 Oct 2004, 15:08
Ans B:

If we know the ratio of employees to execs, then if we pick one out of a group, the probability will always be the same.
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12 Oct 2004, 16:32
Also B

The probabilty from statement 2 is 2/11
Joined: 31 Dec 1969
Location: Russian Federation
Concentration: Entrepreneurship, Technology
GMAT 1: 710 Q49 V0
GMAT 2: 700 Q V
GMAT 3: 740 Q40 V50
GMAT 4: 700 Q48 V38
GMAT 5: 710 Q45 V41
GMAT 6: 680 Q47 V36
GMAT 7: Q42 V44
GMAT 8: Q42 V44
GMAT 9: 740 Q49 V42
GMAT 10: 740 Q V
GMAT 11: 500 Q47 V33
GMAT 12: 670 Q V
WE: Engineering (Manufacturing)
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Kudos [?]: 196 [0], given: 100951

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12 Oct 2004, 19:14
Try this:

If 2 employees of Company A is selected at random for a survey, what is the probability that the employee is an executive?
(1) Company A employs 462 people.
(2) The ratio of the number of employees of Company A who are executives to the number of employees of Company A who are not executives is 2:9.
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