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GRE Math Challenge #30-c cans of soup each week for each

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GRE Math Challenge #30-c cans of soup each week for each [#permalink]  07 Sep 2014, 06:46
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Question Stats:

70% (01:17) correct 30% (00:39) wrong based on 10 sessions
If a school cafeteria needs c cans of soup each week for each student, and if there are s students in the school, for how many weeks will x cans of soup last?

A. $$csx$$

B. $$\frac{xs}{c}$$

C. $$\frac{s}{cx}$$

D. $$\frac{x}{cs}$$

E. $$\frac{cx}{s}$$
[Reveal] Spoiler: OA

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Re: GRE Math Challenge #30-c cans of soup each week for each [#permalink]  16 Jan 2018, 01:07
D. \frac{x}{cs} ; x can divided by s student * c cans
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Re: GRE Math Challenge #30-c cans of soup each week for each [#permalink]  16 Jan 2018, 01:32
I got:
c can of soup for 1 student for 1 week
1 can of soup for 1 student for 1/c week
x can of soup for 1 student for x/c week
x can of soup for s students for xs/c week
(B)
would appreciate an explanation as to how this is D
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Re: GRE Math Challenge #30-c cans of soup each week for each   [#permalink] 16 Jan 2018, 01:32
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