If x and y are two points on the number line what is the value of x + y?
(1) 6 is halfway between x and y
(2) y = 2x
OA A
Source: GMAT Prep
If x and y are two points on the number line what is the
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Question: What is the value of x + y?BTGmoderatorDC wrote:If x and y are two points on the number line what is the value of x + y?
(1) 6 is halfway between x and y
(2) y = 2x
OA A
Source: GMAT Prep
Let's take each statement one by one.
(1) 6 is halfway between x and y.
=> 6 is the arithmetic mean of x and y. Thus, (x + y)/2 = 6 => x + y = 12. Sufficient.
(2) y = 2x.
Certainly insufficient.
The correct answer: A
Hope this helps!
-Jay
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