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# A piece of string is marked in segments of one-fourth the

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VP
Joined: 18 May 2008
Posts: 1261
A piece of string is marked in segments of one-fourth the [#permalink]

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02 Nov 2008, 03:13
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A piece of string is marked in segments of one-fourth the length of the string and also in segments of one third the length of the string. If the string is then cut at each mark, which of the following expresses all the different lengths of the bits of string, in fractions of the original length?

A) 1/12 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
Intern
Joined: 14 Sep 2003
Posts: 45
Location: california

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07 Nov 2008, 15:02
a quick draw on paper suggests

there should be atleast one 1/4 length, and a total of 3 different lengths..Doing the Process of Elim, you get C and D remaining. upon further solving, you know that atleast one has to be 1/2 in length. So my pick for an answer is D
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Intern
Joined: 14 Sep 2003
Posts: 45
Location: california

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07 Nov 2008, 15:08
sorry a small correction to my last post. Atleast one should be 1/12 and not 1/2 as posted.
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excellence is the gradual result of always striving to do better

Manager
Joined: 20 Mar 2008
Posts: 158
Location: USA

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07 Nov 2008, 15:12
--1/4--1/3--1/2—2/3---3/4--1

1/4-0 = 1/4
1/3-1/4 = 1/12
1/2-1/3 = 1/6
2/3-1/2 = 1/6
3/4-2/3 = 1/12
1 -3/4 = 1/4

Therefore 1/4,1/6,1/12 --> D
Re: strings   [#permalink] 07 Nov 2008, 15:12
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