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15 Jun 2011, 08:52
00:00

Difficulty:

25% (medium)

Question Stats:

88% (01:52) correct 12% (01:39) wrong based on 17 sessions

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Average of money that group of 4 friends pay for rent each month is $800.After one persons rent is increased by 20% the new mean is$850.What was original rent of friend whose rent is increased?

A. 800
B. 900
C. 1000
D. 1100
E. 1200
[Reveal] Spoiler: OA

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16 Jun 2011, 00:06
increased amount = 850*4
= 200.

thus 20% of x = 200 means x = 1000 is the original rent.
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Re: Average of money that group of 4 friends pay for rent each month is $8 [#permalink] 16 Jun 2011, 00:06 Similar topics Replies Last post Similar Topics: Each month, after Jill pays for rent, utilities, food, and other neces 1 06 May 2016, 12:56 The average weight of a group of 30 friends increases by 1 kg when the 3 13 Mar 2016, 12:40 A group of college friends plan to rent a house together for x dollars 2 17 Feb 2016, 04:34 1 ABC company pays an average of$140 per vehicle each month in outdoor 4 04 Mar 2011, 11:14