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# If x, y, and z are positive numbers, what is the value of the average

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Intern
Joined: 15 Aug 2017
Posts: 4
If x, y, and z are positive numbers, what is the value of the average  [#permalink]

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04 Apr 2018, 04:27
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(N/A)

Question Stats:

67% (01:34) correct 33% (00:22) wrong based on 3 sessions

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If x, y, and z are positive numbers, what is the value of the average (arithmetic mean) of x and z ?

x − y = y − z
x2 − y2 = z
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.
Math Expert
Joined: 02 Sep 2009
Posts: 58336
Re: If x, y, and z are positive numbers, what is the value of the average  [#permalink]

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04 Apr 2018, 04:29
1
pranavpal wrote:
If x, y, and z are positive numbers, what is the value of the average (arithmetic mean) of x and z ?

x − y = y − z
x2 − y2 = z
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.

Discussed here: https://gmatclub.com/forum/if-x-y-and-z ... 43301.html

Hope it helps.
_________________
Re: If x, y, and z are positive numbers, what is the value of the average   [#permalink] 04 Apr 2018, 04:29
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