Is x > y?
(1) x = y + 2
(2) x/2 = y - 1
A
OG Is x > y?
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Hi AbeNeedsAnswers,
We're asked if X is greater than Y. This is a YES/NO question. We can solve it by TESTing VALUES.
1) X = Y +2
With this Fact, we can see that X is "2 greater" than Y, so the answer to the question is ALWAYS YES. You can see this pattern with a few TESTs:
IF....
Y = 0, X = 2
Y = 5, X = 7
Y = -3, X = -1
Etc.
Fact 1 is SUFFICIENT
2) X/2 = Y - 1
IF....
Y = 1, X = 0 and the answer to the question is NO
Y = 3, X = 4 and the answer to the question is YES
Fact 2 is INSUFFICIENT
Final Answer: A
GMAT assassins aren't born, they're made,
Rich
We're asked if X is greater than Y. This is a YES/NO question. We can solve it by TESTing VALUES.
1) X = Y +2
With this Fact, we can see that X is "2 greater" than Y, so the answer to the question is ALWAYS YES. You can see this pattern with a few TESTs:
IF....
Y = 0, X = 2
Y = 5, X = 7
Y = -3, X = -1
Etc.
Fact 1 is SUFFICIENT
2) X/2 = Y - 1
IF....
Y = 1, X = 0 and the answer to the question is NO
Y = 3, X = 4 and the answer to the question is YES
Fact 2 is INSUFFICIENT
Final Answer: A
GMAT assassins aren't born, they're made,
Rich
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Your Answer
A
B
C
D
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Global Stats
Statement One Alone:AbeNeedsAnswers wrote:Is x > y?
(1) x = y + 2
(2) x/2 = y - 1
x = y + 2
Since x is always 2 more than y, we see that x will always be greater than y. Statement one alone is sufficient to answer the question.
Statement Two Alone:
x/2 = y - 1
x = 2y - 2
We see that x is not necessarily greater than y.
If y = 1, then x = 0 and x < y.
If y = 3, then x = 4 and x > y.
Statement two alone is not sufficient to answer the question.
Answer: A
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