Uri wrote:
I simplified the question as:
(x - y) > (x + y)
i.e., I need to know whether y < 0.
This information is provided in (2). But (B) is not the answer.
Can you please tell me where I have made the mistake? Have I overlooked some rule in of inequality while simplifying?
OA: [spoiler](E)[/spoiler]
Hi Uri,
My solution is hard to see, but if you can train yourself in Number Properties to think along similar lines, this will really really help you on test day.
Thought Process:
On a GMAT question, when you see inequalities that contain variables in conjunction with Division or Multiplication, the first thing you have to ask yourself is "What do I know about the SIGN of the variable?"
Q: Is (x-y) / (x+y) > 1?
We see variables, we see inequalities and we see division....RED ALERT.
Immediately focus your energies on trying to reframe the question.....this part is hard to see, but with practice will become easier.
Restated Question:
Is Absolute Value of (x-y) > Absolute Value of (x+y)?
The absolute value reframing of the question will allow you to multiply...since Absolute value cannot be negative.
Within 10 to 15 seconds you should eliminate answer choices A / B and D. We need information about both variables to answer the question....but each statement gives us only one variable.
It's between C & E now.
Since we dotn have the value of the variables we really cannot say Yes or NO with any conviction.
Leaves us with
E as the answer.
For love, not money.
