40% of the employees in a factory are workers... : GMAT Problem Solving (PS)
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# 40% of the employees in a factory are workers...

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Manager
Joined: 22 Sep 2010
Posts: 92
Followers: 2

Kudos [?]: 154 [0], given: 0

40% of the employees in a factory are workers... [#permalink]

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08 Oct 2010, 04:37
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Question Stats:

50% (03:00) correct 50% (01:16) wrong based on 4 sessions

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40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390.The annual income of each executive is$420. What is the average annual income of all the employees in the factory together?

A. 390
B. 405
C. 408
D. 415
E. 420
Manager
Joined: 22 Jun 2010
Posts: 57
Followers: 1

Kudos [?]: 53 [0], given: 10

Re: 40% of the employees in a factory are workers... [#permalink]

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08 Oct 2010, 04:43
pzazz12 wrote:
40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390.The annual income of each executive is$420. What is the average annual income of all the employees in the factory together?

A. 390
B. 405
C. 408
D. 415
E. 420

0.4x390 + 0.6x420 = 408 --> C
Manager
Joined: 17 Apr 2010
Posts: 107
Followers: 2

Kudos [?]: 57 [0], given: 12

Re: 40% of the employees in a factory are workers... [#permalink]

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08 Oct 2010, 06:40
Yes it should be 408 i.e C
Re: 40% of the employees in a factory are workers...   [#permalink] 08 Oct 2010, 06:40
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