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A certain copy machine produces 13 copies every 10 seconds. If the mac

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A certain copy machine produces 13 copies every 10 seconds. If the mac  [#permalink]

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New post 01 Feb 2018, 23:37
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

86% (00:56) correct 14% (00:49) wrong based on 83 sessions

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Re: A certain copy machine produces 13 copies every 10 seconds. If the mac  [#permalink]

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New post 02 Feb 2018, 00:06
Bunuel wrote:
A certain copy machine produces 13 copies every 10 seconds. If the machine operates without interruption, how many copies will it produce in an hour?

(A) 78
(B) 468
(C) 1800
(D) 2808
(E) 4680


1 hour = 3600 seconds

in 10 seconds the copies produced = 13
in 1 seconds the copies produced = 13/10
in 3600 seconds the copies produced = (13/10)*3600 = 4680

Answer: Option E
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Re: A certain copy machine produces 13 copies every 10 seconds. If the mac  [#permalink]

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New post 02 Feb 2018, 07:49
Bunuel wrote:
A certain copy machine produces 13 copies every 10 seconds. If the machine operates without interruption, how many copies will it produce in an hour?

(A) 78
(B) 468
(C) 1800
(D) 2808
(E) 4680


\(13*6*60 = 4680\) , Answer will be (E)

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Re: A certain copy machine produces 13 copies every 10 seconds. If the mac  [#permalink]

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New post 02 Feb 2018, 09:41
Bunuel wrote:
A certain copy machine produces 13 copies every 10 seconds. If the machine operates without interruption, how many copies will it produce in an hour?

(A) 78
(B) 468
(C) 1800
(D) 2808
(E) 4680


Sol:

Formula

Rate X Time= Work

13 Copies for every 10s => Rate = 13 Copies/10 seconds
Now for 1 hr =60 min x 60sec=3600 seconds =(Time)

Therefore Rate x Time = (13 /10)*3600 = 4680

Ans: Option E
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Re: A certain copy machine produces 13 copies every 10 seconds. If the mac   [#permalink] 02 Feb 2018, 09:41
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