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# Benchmark Values (MGMAT Fractions Strategy)

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Intern
Joined: 22 Dec 2009
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Benchmark Values (MGMAT Fractions Strategy) [#permalink]

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24 Dec 2009, 05:26
Hello Fellows,

could you please explain one specific thing whithin Benchmark Values (BV) area which are used to compare fractions?

General idea is that one can transform most fractions in one of the follwing Benchmark Values: $$\frac{1}{4}$$, $$\frac{1}{3}$$, $$\frac{1}{2}$$, $$\frac{2}{3}$$ and $$\frac{3}{4}$$

Question:
There are many cases where in is not clear which BV to use and this may change the answer completely.
Do you know some specific rule for this?

For example, for $$\frac{5}{18}$$ MGMAT states BV for it $$\frac{1}{4}$$. But on my opinion, I would also take $$\frac{1}{3}$$

PS. If more clarification needed pls let me know.
Intern
Joined: 29 Jan 2010
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Schools: Ted Rogers (Ryerson),
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Re: Benchmark Values (MGMAT Fractions Strategy) [#permalink]

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08 Feb 2010, 14:01
All I can think of is the following:

1/4 = 4.5 /18
1/3 = 6/18

|5- 4.5| < |5 - 6|

Hope that helps
Senior Manager
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Re: Benchmark Values (MGMAT Fractions Strategy) [#permalink]

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01 Jul 2010, 06:02
This makes sense - I had the same problem using MGMAT benchmark values as well (but the book didnt explain WHY they chose 1/4 instead of 1/3)
Re: Benchmark Values (MGMAT Fractions Strategy)   [#permalink] 01 Jul 2010, 06:02
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