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# A company s profit was $600,000 in 1990. What was its profit  post reply Question banks Downloads My Bookmarks Reviews Important topics Author Message Manager Joined: 14 Mar 2007 Posts: 236 Followers: 1 Kudos [?]: 3 [0], given: 0 A company s profit was$600,000 in 1990. What was its profit [#permalink]

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28 May 2007, 06:27
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A company´s profit was $600,000 in 1990. What was its profit in 1991? (1) There was a 20 percent increase in income in 1991. (2) There was a 25 percent increase in costs in 1991. Manager Joined: 02 May 2007 Posts: 152 Followers: 1 Kudos [?]: 5 [0], given: 0 Re: another good one [#permalink] ### Show Tags 28 May 2007, 06:36 andrehaui wrote: A company´s profit was$600,000 in 1990. What was its profit in 1991?

(1) There was a 20 percent increase in income in 1991.
(2) There was a 25 percent increase in costs in 1991.

For (E)

P(90) = I(90) - C(90) = 600,000
P(91) = I(91) - C(91) = ?

(1) I(91) = 1,2*I(90)
Do not know anything about C(91) => insuff

(2) C(91) = 1,25*C(90)
Do not know anything about I(91) => insuff

(1) & (2)

P(90) = I(90) - C(90) = 600,000
P(91) = I(91) - C(91) = 1,2*I(90) - 1,25*C(90)
=> not enough to solve the above equation
=> insuff

Hence, (E)
Re: another good one   [#permalink] 28 May 2007, 06:36
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