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Re: If x and y are points on the number line, what is the value [#permalink]
03 Jan 2015, 09:55

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Re: If x and y are points on the number line, what is the value [#permalink]
05 Jan 2015, 03:29

Expert's post

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. On the GMAT we often see such statement and it can ALWAYS be expressed algebraically as \(6=\frac{x+y}{2}\) --> \(x+y=12\). Remember we are asked to determine the value of \(x+y\) not \(x\) and \(y\). Sufficient.

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