Fractional Equivalents

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medea66: Master | Next Rank: 500 Posts; Posts: 186; Joined: Sat Jan 26, 2008 10:05 pm; Thanked: 2 times

by medea66 » Tue Aug 26, 2008 8:34 pm

How do you get "AN" in the denominator? That is the only part I don't understand.

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Source: Beat The GMAT — Problem Solving | Tue Aug 26, 2008 8:34 pm

vishubn: Legendary Member; Posts: 574; Joined: Sun Jun 01, 2008 8:48 am; Location: Bangalore; Thanked: 28 times

by vishubn » Tue Aug 26, 2008 8:57 pm

Hi
I dont know where u went wrong .. this is just a straight forward simplification :

--> R=(24F/N)/P+(A/12)
-->(24F/N)/((12P+A)/12)
-->(24F/N)*(12/(12P+A))
-->288F/N(12P+A)
-->288F/12NP+AN is the answer

Vishu

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