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Fractions help!

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gmat00
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Fractions help! [#permalink] New post   15 Mar 2010, 12:00
Hi can anyone please show the fastest way to do this kind of problems.

(1/30)+(1/31)+(1/32)=

Thanks in advance :-D
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nickk
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Re: Fractions help! [#permalink] New post   15 Mar 2010, 13:40
often you can deduce the answer based on the answer choices

in this case it would be slightly more than 3/32
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jatt86
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Re: Fractions help! [#permalink] New post   16 Mar 2010, 04:59
take the middle term and multiply by the no. of terms ... this is HP SERIES
3/31 sp slightly less than .1
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nonameee
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Re: Fractions help! [#permalink] New post   25 Dec 2010, 05:52
Is there a way to solve these kind of questions avoiding tedious addition?
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amma4u
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Re: Fractions help! [#permalink] New post   18 Jan 2011, 09:23
nonameee - approximating is the only way to solve these types of questions
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hurleycr
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Re: Fractions help! [#permalink] New post   18 Jan 2011, 10:35
you can always do LCM for 30, 31, 32 but without seeing the answer choices its hard to determine the quickest way to an answer. if the answer choices are really close together, then taking the LCM approach will get you the correct answer, but if they are fairly spread a part then approximation is the way to go.

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hurleycr
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Re: Fractions help! [#permalink] New post   18 Jan 2011, 10:38
another note.... it would be rare in my experience thus far to see answer choices that close together.

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Re: Fractions help! [#permalink] New post   15 Aug 2016, 02:52
Highest value =>3*1/30 =3/30
Smallest value => 3*1/32 so the range => (3/32,3/30)
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Re: Fractions help! [#permalink]
15 Aug 2016, 02:52
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