What is the value of (k - w) + (k - x) + (k - y)?
(1) w, x, and y are three consecutive odd numbers.
(2) The mean of w, x, and y is k.
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(k – w) + (k – x) + (k – y)?
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sanju09
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Anurag@Gurome
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(1) w, x, and y are three consecutive odd numbers does not give any info about k.
So, (1) is NOT SUFFICIENT.
(2) (w + x + y)/3 = k implies w + x + y = 3k
3k - w - x - y = 0 or (k - w) + (k - x) + (k - y) = 0
So, (2) is SUFFICIENT.
The correct answer is B.
So, (1) is NOT SUFFICIENT.
(2) (w + x + y)/3 = k implies w + x + y = 3k
3k - w - x - y = 0 or (k - w) + (k - x) + (k - y) = 0
So, (2) is SUFFICIENT.
The correct answer is B.
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GMATGuruNY
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Since (k - w) + (k - x) + (k - y) = 3k - (w+x+y), the question can be rephrased:sanju09 wrote:What is the value of (k - w) + (k - x) + (k - y)?
(1) w, x, and y are three consecutive odd numbers.
(2) The mean of w, x, and y is k.
Source: https://readyforgmat.com
What is the value of 3k - (w+x+y)?
Statement 1: w, x, and y are consecutive odd numbers
No information about k.
Insufficient.
Statement 2: The mean of w, x, and y is k
k = (w+x+y)/3
3k = w+x+y
Thus, 3k - (w+y+z) = 3k - 3k = 0.
Sufficient.
The correct answer is B.
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I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
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