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40% of the employees in a factory are workers...

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Joined: 22 Sep 2010
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40% of the employees in a factory are workers... [#permalink]

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New post 08 Oct 2010, 05:37
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A
B
C
D
E

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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
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Joined: 22 Jun 2010
Posts: 57
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Re: 40% of the employees in a factory are workers... [#permalink]

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New post 08 Oct 2010, 05:43
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
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Joined: 17 Apr 2010
Posts: 108
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Kudos [?]: 56 [0], given: 12

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

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New post 08 Oct 2010, 07:40
Yes it should be 408 i.e C
Re: 40% of the employees in a factory are workers...   [#permalink] 08 Oct 2010, 07:40
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40% of the employees in a factory are workers...

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