ketkoag wrote:If w and c are integers, is w > 0?
(1) w + c > 50
(2) c > 48
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i got E for this one but Oa is C. please explain how?[/spoiler]
(1) If w = 30, c = 21, then w > 0
If w = -10, c = 61, then w < 0
No definite answer; NOT sufficient.
(2) c > 48 gives no info about w; NOT sufficient.
Combining (1) and (2), If w = 30, c = 51, then w > 0
If w = -10, c = 61, then w < 0; NOT sufficient.
The correct answer is
E.
I think that statement 1 should be w + c < 50 instead of w + c > 50. In that case, both the statements alone are not sufficient. When we combine the two statements: If we take c = 49 (the smallest possible value of c), then w = 0 for w + c < 50 to hold true. This means that w < 0 always, and the answer to the question is "no". Then the correct answer would be C.
