What is y?
(1) x - y = 1
(2) xy = 12
I understand the question but my doubt however is:
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(1) x - y = 1
(2) xy = 12
I understand the question but my doubt however is:
[Reveal] Spoiler:
The MGMAT Guide says,
Quote:
Even when the equations are combined, they do not provide enough information to find y, and the
answer is (E).
. I do not understand why it says that because when I combine both the equations, I get a quadratic equation. I solve it and I get two answers y = -4 or y = 3. So, my take is using both the equations I am able to find the value of y. So, why is the correct answer E and why not C? Thank you!answer is (E).