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PS: Ratio + Movies

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Senior Manager
Joined: 02 Oct 2005
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PS: Ratio + Movies [#permalink]

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19 Nov 2005, 17:54
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Please see the attachment for question.

Choices:

a) 3:16
b) 1:2
c) 2:3
d) 9:8
e) 3:1

Any short-cuts or procedural way to solve this problem, other than trying all the choices?
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VP
Joined: 06 Jun 2004
Posts: 1057
Location: CA
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Re: PS: Ratio + Movies [#permalink]

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19 Nov 2005, 19:07
sudhagar wrote:
Please see the attachment for question.

Choices:

a) 3:16
b) 1:2
c) 2:3
d) 9:8
e) 3:1

Any short-cuts or procedural way to solve this problem, other than trying all the choices?

The equation could be setup like this....

2n + 1.5r = 30

In order for r to be an integer, it has to be an even number. (a), (b), (d) are all possible choices but the question is asking for EXCEPT.

Choices left are (c) and (e) and plugging it in, C is the only one that doesn't work.
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19 Nov 2005, 20:10
If we ignore the even ones and suppose the ratio 2:3 is expressed as 4:6, then there is a possibility that we would miss that right?

Pls lmk if I am over looking something here
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19 Nov 2005, 20:57
If we reduce all the ratios to the simplest form, then we shouldn't miss it.

What is the OA?
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19 Nov 2005, 23:21
Thats good point.

Btw, OA is C
19 Nov 2005, 23:21
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