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07 Jul 2019, 07:50
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Difficulty:
25%
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Question Stats:
67% (00:54) correct
33%
(00:56)
wrong
based on 73
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07 Jul 2019, 07:56
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Is a/b > c?
(1) a> bc. If b is negative, then after divining both sides by b and flipping the sign (when dividing by negative value we should flip the sign), we'd get a/b < c (answer NO) but if b is positive, then after divining both sides by b (when dividing by positive value we should keep the sign), we'd get a/b > c (answer YES). Not sufficient.
(2) b > 0. Clearly insufficient.
(1)+(2) Since b is positive from (2), then we have the second case from (1): a/b > c (answer YES). Sufficient.
Answer: C.
(1) a> bc. If b is negative, then after divining both sides by b and flipping the sign (when dividing by negative value we should flip the sign), we'd get a/b < c (answer NO) but if b is positive, then after divining both sides by b (when dividing by positive value we should keep the sign), we'd get a/b > c (answer YES). Not sufficient.
(2) b > 0. Clearly insufficient.
(1)+(2) Since b is positive from (2), then we have the second case from (1): a/b > c (answer YES). Sufficient.
Answer: C.
longway25
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07 Jul 2019, 08:14
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Bunuel
Is a/b > c?
(1) a> bc. If b is negative, then after divining both sides by b and flipping the sign (when dividing by negative value we should flip the sign), we'd get a/b < c (answer NO) but if b is positive, then after divining both sides by b (when dividing by positive value we should keep the sign), we'd get a/b > c (answer YES). Not sufficient.
(2) b > 0. Clearly insufficient.
(1)+(2) Since b is positive from (2), then we have the second case from (1): a/b > c (answer YES). Sufficient.
Answer: C.
(1) a> bc. If b is negative, then after divining both sides by b and flipping the sign (when dividing by negative value we should flip the sign), we'd get a/b < c (answer NO) but if b is positive, then after divining both sides by b (when dividing by positive value we should keep the sign), we'd get a/b > c (answer YES). Not sufficient.
(2) b > 0. Clearly insufficient.
(1)+(2) Since b is positive from (2), then we have the second case from (1): a/b > c (answer YES). Sufficient.
Answer: C.
It could also be possible that a and c are both negative and c is more negative than a. I jus do not get how to approach such questions. Is there a frame of mind one should be in? Bunuel
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