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In a factory the average monthly salary of workers is 550$ and that of

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In a factory the average monthly salary of workers is 550$ and that of  [#permalink]

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New post 20 Feb 2019, 05:06
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

81% (02:20) correct 19% (02:41) wrong based on 36 sessions

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Posts: 85
Location: India
GPA: 3.1
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Re: In a factory the average monthly salary of workers is 550$ and that of  [#permalink]

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New post 20 Feb 2019, 05:25
1
assume worker = x

the by the given condition

x*550+ 16*3000 = 600* ( 16+x)

after solving this we get x = 768

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Re: In a factory the average monthly salary of workers is 550$ and that of  [#permalink]

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New post 20 Feb 2019, 09:43
Bunuel wrote:
In a factory the average monthly salary of workers is 550$ and that of 16 officers is 3000$. If the average monthly salary of workers and officers combined is 600$, find the number of workers in the factory.

A. 687
B. 768
C. 786
D. 798
E. 876



550x+16*3000 = 600 * (16+x)
x = 768
IMO B
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Re: In a factory the average monthly salary of workers is 550$ and that of  [#permalink]

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New post 22 Feb 2019, 16:42
Bunuel wrote:
In a factory the average monthly salary of workers is 550$ and that of 16 officers is 3000$. If the average monthly salary of workers and officers combined is 600$, find the number of workers in the factory.

A. 687
B. 768
C. 786
D. 798
E. 876


We can let w = the number of workers and create the equation:

(550w + 16 x 3000)/(w + 16) = 600

550w + 48,000 = 600w + 9,600

38,400 = 50w

w = 768

Answer: B
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Re: In a factory the average monthly salary of workers is 550$ and that of   [#permalink] 22 Feb 2019, 16:42
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