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# gmat prep

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Intern
Joined: 26 Jan 2009
Posts: 22
Schools: University of Toronto, Schulich, Western, Queens

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07 Apr 2009, 22:29
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can anyone help with this gmat prep problem...thanks
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Senior Manager
Joined: 08 Jan 2009
Posts: 317

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08 Apr 2009, 07:24
Soln :

Increases a constant k every year .

End of 1 yr - 4+ K
End of 4 yr - 4 + 4K
End of 6 yr - 4 + 6K

(4+6k) -( 4+4k) = 1/5( 4+ 4K)

K = 2/3
Director
Joined: 29 Aug 2005
Posts: 836

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08 Apr 2009, 14:05
4+6x=1.2(4+4x)

x=2/3
Re: gmat prep   [#permalink] 08 Apr 2009, 14:05
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