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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 31 Oct 2017, 00:00
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A
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E

Difficulty:

  35% (medium)

Question Stats:

70% (01:14) correct 30% (01:49) wrong based on 30 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
[Reveal] Spoiler: OA

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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, 08:57
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, 09:12
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, 17:08
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Expert's post
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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Kudos [?]: 1012 [1], given: 3

Re: A company can sell 100x machine parts if it charges 10 – 0.1x dollars   [#permalink] 01 Nov 2017, 17:08
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