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# To service a single device in 12 seconds, 700 nanorobots are required,

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Math Expert
Joined: 02 Sep 2009
Posts: 53069
To service a single device in 12 seconds, 700 nanorobots are required,  [#permalink]

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29 Jun 2018, 03:50
00:00

Difficulty:

45% (medium)

Question Stats:

65% (02:36) correct 35% (02:09) wrong based on 61 sessions

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To service a single device in 12 seconds, 700 nanorobots are required, with all nanorobots working at the same constant rate. How many hours would it take for a single nanorobot to service 12 devices?

(A) $$\frac{7}{3}$$
(B) 28
(C) 108
(D) 1,008
(E) 1,680

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Re: To service a single device in 12 seconds, 700 nanorobots are required,  [#permalink]

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29 Jun 2018, 03:54
1
Bunuel wrote:
To service a single device in 12 seconds, 700 nanorobots are required, with all nanorobots working at the same constant rate. How many hours would it take for a single nanorobot to service 12 devices?

(A) $$\frac{7}{3}$$
(B) 28
(C) 108
(D) 1,008
(E) 1,680

Ans: B

total nanorobots seconds required to service Single device := 12x700 nanorobots seconds/device
so to service 12 devices required nano robots are= 12x700x12 seconds
= (144x700)/(60x60) hrs=28 hrs.
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Re: To service a single device in 12 seconds, 700 nanorobots are required,   [#permalink] 29 Jun 2018, 03:54
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