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If the average (arithmetic mean) of the assessed values of x

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Intern
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Joined: 08 Nov 2008
Posts: 38

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If the average (arithmetic mean) of the assessed values of x [#permalink]

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New post 17 Nov 2008, 09:46
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If the average (arithmetic mean) of the assessed values
of x houses is $212,000 and the average of the assessed
values of y other houses is $194,000, what is the average
of the assessed values of the x+y houses?

(1) x+y=36
(2) x=2y

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer:

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SVP
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Joined: 17 Jun 2008
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Re: house--25 [#permalink]

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New post 17 Nov 2008, 09:50
B.

Required average = (x*212000 + y*194000)/(x+y) and by substituting x with 2y, the numerical value can be obtained.

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Re: house--25   [#permalink] 17 Nov 2008, 09:50
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If the average (arithmetic mean) of the assessed values of x

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