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Running at the same constant rate, 6 identical machines can

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Re: Running at the same constant rate, 6 identical machines can [#permalink] New post 06 May 2012, 06:29
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Question Stats:

95% (02:02) correct 4% (00:27) wrong based on 5 sessions
sravanth wrote:
Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

(A) 648
(B) 1,800
(C) 2,700
(D) 10,800
(E) 64,800



6 machines produce 270 bottles per minute;
1 machine produces 270/6=45 bottles per minute;
10 machines produce 45*10=450 bottles per minute;

In 4 minutes 10 machines produce 450*4=1,800 bottles.

Answer: B.
[Reveal] Spoiler: OA

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Re: Running at the same constant rate, 6 identical machines can [#permalink] New post 21 Jun 2012, 02:30
Productivity per machine = x

6x = 270

x = 270/6 per minute

Production by 10 machines in 4 minutes = 10 * 270/6 * 4 = 1800
Re: Running at the same constant rate, 6 identical machines can   [#permalink] 21 Jun 2012, 02:30
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