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A company can sell 100x machine parts if it charges 10 – 0.1x dollars

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A company can sell 100x machine parts if it charges 10 – 0.1x dollars  [#permalink]

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New post 30 Oct 2017, 23:00
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E

Difficulty:

  25% (medium)

Question Stats:

82% (01:31) correct 18% (02:57) wrong based on 50 sessions

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A company can sell 100x machine parts if it charges 10 – 0.1x dollars for each machine part. How many machine parts can the company sell if it charges $4.00 for each machine part?

(A) 6
(B) 9.6
(C) 60
(D) 960
(E) 6,000

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A company can sell 100x machine parts if it charges 10 – 0.1x dollars  [#permalink]

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New post 31 Oct 2017, 07:57
Bunuel wrote:
A company can sell 100x machine parts if it charges 10 – 0.1x dollars for each machine part. How many machine parts can the company sell if it charges $4.00 for each machine part?

(A) 6
(B) 9.6
(C) 60
(D) 960
(E) 6,000

I think E. I might be mistaken.

Each machine part is sold at 10 - 0.1x

Each machine part is sold for $4.00

10 - 0.1x = 4
6 = .1x
x = 60

The company can sell 100x machine parts.

(100)(60) = 6,000

Answer E
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Re: A company can sell 100x machine parts if it charges 10 – 0.1x dollars  [#permalink]

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New post 31 Oct 2017, 08:12
Company charges 10 – 0.1x = 4 dollars for each machine part
0.1x=6
x=60
Machine parts company can sell = 100x=100*60=6000
Answer E.
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Re: A company can sell 100x machine parts if it charges 10 – 0.1x dollars  [#permalink]

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New post 01 Nov 2017, 16:08
1
Bunuel wrote:
A company can sell 100x machine parts if it charges 10 – 0.1x dollars for each machine part. How many machine parts can the company sell if it charges $4.00 for each machine part?

(A) 6
(B) 9.6
(C) 60
(D) 960
(E) 6,000


Since each machine part is sold for 4 dollars, or (10 - 0.1x) dollars, we can equate the two amounts:

10 - 0.1x = 4

6 = 0.1x

60 = x

Thus, the company can sell 100(60) = 6,000 machine parts.

Answer: E
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Re: A company can sell 100x machine parts if it charges 10 – 0.1x dollars &nbs [#permalink] 01 Nov 2017, 16:08
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