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# a and b are positive numbers. Is a>b? (1) ax>bx (2)

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SVP
Joined: 03 Feb 2003
Posts: 1611
Followers: 6

Kudos [?]: 74 [0], given: 0

a and b are positive numbers. Is a>b? (1) ax>bx (2) [#permalink]  20 Jul 2003, 00:08
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100% (00:00) correct 0% (00:00) wrong based on 1 sessions
a and b are positive numbers. Is a>b?

(1) ax>bx
(2) x*a^2+x*b^2<0
Intern
Joined: 17 Jul 2003
Posts: 34
Location: New York
Followers: 0

Kudos [?]: 0 [0], given: 0

Is it C?

Neither one answers it on its own, and if you take the question and statement one for a fact, then you know a, b, and x have to be positive. so then statement 2 is impossible, cause it will never be less than 0 when all are positive.

so the answer to the question is no, a is not greater than b, and you need both to come up with it?
SVP
Joined: 03 Feb 2003
Posts: 1611
Followers: 6

Kudos [?]: 74 [0], given: 0

C is correct.

(1) is not sufficient since we do not know x
(2) x<0, not sufficient again because we have squares of a and b and so lose their signs.

Combine: a<b
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