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If apples cost x dollars per m dozen, how many dollars will it cost to

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If apples cost x dollars per m dozen, how many dollars will it cost to [#permalink]

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New post 15 Aug 2016, 02:58
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A
B
C
D
E

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  15% (low)

Question Stats:

74% (00:52) correct 26% (01:14) wrong based on 42 sessions

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If apples cost x dollars per m dozen, how many dollars will it cost to [#permalink]

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New post 15 Aug 2016, 03:17
Bunuel wrote:
If apples cost x dollars per m dozen, how many dollars will it cost to buy n apples?

A. xn/(12m)
B. xn/m
C. m/(xn)
D. 12m/(xn)
E. 12mn/x


I tried in this way.... let it 2 dollars for 2 dozens(24) and we are asked to find the value n apples...let n be 4...

In order to buy 24 apples it took 2 dollars...then for 4 apples it'll take 4*2/12*2 = 1/3.. i.e. n*x/12*m.

IMO option A is correct answer...

OA please will correct if I missed anything...

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Re: If apples cost x dollars per m dozen, how many dollars will it cost to [#permalink]

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New post 29 Nov 2017, 20:37
Hi All,

We're told that apples cost X dollars per M dozen. We're asked for the cost (in dollars) to buy N apples. This question can be solved by TESTing VALUES.

To start, a 'dozen' is 12, so it would make sense to choose a value for X that is a multiple of 12....

IF....
X=12 and M=2
We're spending $12 to buy (2)(12) = 24 apples, which gives us a cost of $0.50/apple

N = 4
Thus, the cost of 4 apples is (4)($0.50) = $2. Thus, we're looking for an answer that equals 2 when we plug X=12, M=2 and N=4 into the answers. There's only one answer that matches...

Final Answer:
[Reveal] Spoiler:
A


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Re: If apples cost x dollars per m dozen, how many dollars will it cost to [#permalink]

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New post 04 Dec 2017, 10:36
Bunuel wrote:
If apples cost x dollars per m dozen, how many dollars will it cost to buy n apples?

A. xn/(12m)
B. xn/m
C. m/(xn)
D. 12m/(xn)
E. 12mn/x


The cost of apples is x/m dollars/dozen or x/(12m) dollars/apple.

Since cost = unit price x quantity, n apples will cost x/(12m) * n = xn/(12m).

Answer: A
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Re: If apples cost x dollars per m dozen, how many dollars will it cost to   [#permalink] 04 Dec 2017, 10:36
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