algebra exponent question

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kajcha: Master | Next Rank: 500 Posts; Posts: 321; Joined: Tue Aug 28, 2007 5:42 am; Thanked: 1 times

by kajcha » Thu Sep 20, 2007 5:56 pm

400,000 = 4*4*4*25*25*5*2 = (4^3)(25^2)(25^0.5)(4^0.5)

= (4^3.5)(25^2.5)

n = 2.5

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Source: Beat The GMAT — Problem Solving | Thu Sep 20, 2007 5:56 pm

niks_01.27: Senior | Next Rank: 100 Posts; Posts: 45; Joined: Wed Jun 20, 2007 12:40 pm; Location: Cleveland, OH

by niks_01.27 » Thu Sep 20, 2007 6:29 pm

Perfect; n = 2.5

regards
niks...

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