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A math problem, pls help to solve

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A math problem, pls help to solve [#permalink] New post 06 Aug 2011, 03:22
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A straight pipe 1 yard in length was marked off in fourths and also in thirds. If the pipe was then cut into separate pieces at each pf these markings, which of the following gives all the different lengths of the pieces, in fractions of a yard?

a) 1/6 and 1/4 only
b) 1/4 and 1/3 only
c) 1/6, 1/4 and 1/3
d) 1/12, 1/6 and 1/4
e) 1/12, 1/6 and 1/3

pls explain in details.
[Reveal] Spoiler: OA
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Re: A math problem, pls help to solve [#permalink] New post 06 Aug 2011, 06:53

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Re: A math problem, pls help to solve [#permalink] New post 07 Aug 2011, 17:02
I still don't follow their explaination, I draw the picture like following,

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Re: A math problem, pls help to solve [#permalink] New post 02 Nov 2011, 11:37
You didnt draw it right. The pipe should have segments at 0, 1/4,1/3,1/2,2/3,3/4,1. if you mark these on the number line, you will be able to get the answer.

First segment : 1/4

Second segment : 1/3-1/4 = 1/12

Third segment : 2/3-1/2 = 1/6
Re: A math problem, pls help to solve   [#permalink] 02 Nov 2011, 11:37
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