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# GRE Math Challenge #49-computer can perform c calculations

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GRE Math Challenge #49-computer can perform c calculations [#permalink]  24 Dec 2014, 05:41
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Question Stats:

37% (00:54) correct 62% (00:17) wrong based on 45 sessions
A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?

A) $$\frac{60ks}{c}$$

B) $$\frac{ks}{c}$$

C) $$\frac{ks}{60c}$$

D) $$\frac{60c}{ks}$$

E) $$\frac{k}{60cs}$$
[Reveal] Spoiler: OA

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Re: GRE Math Challenge #49-computer can perform c calculations [#permalink]  18 Jul 2018, 14:15
soumya1989 wrote:
A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?

A) $$\frac{60ks}{c}$$

B) $$\frac{ks}{c}$$

C) $$\frac{ks}{60c}$$

D) $$\frac{60c}{ks}$$

E) $$\frac{k}{60cs}$$

c calculation needs s sec

1 calculation needs s/c sec

k calculation needs ks/c sec

Note: we are asked to determine the answer in minutes. So, divide by 60.

(ks/c)/60

= ks / 60c

Re: GRE Math Challenge #49-computer can perform c calculations   [#permalink] 18 Jul 2018, 14:15
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