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CEO
Joined: 15 Aug 2003
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is p + q > 0? 1. p / (p+q) > 0 2. q / (p+q) > 0 [#permalink]
 08 Jan 2004, 11:01
Question Stats:
0% (00:00) correct
 0% (00:00) wrong based on 0 sessions
is p + q > 0?
1. p / (p+q) > 0
2. q / (p+q) > 0
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Director
Joined: 28 Oct 2003
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My brain says E but my gut says that I'm missing something...
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Director
Joined: 05 May 2003
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Even I feel the answer should be E.
1. p / (p+q) > 0
for example, p=-4 and q=2 then p/(p+q) is positive but p+q is negative
p=4 and q=2 then p/(p+q) and p+q are positive
So, insufficient
2. q / (p+q) > 0
for example, p=2 and q=-4 then p/(p+q) is positive but p+q is negative
p=2 and q=2 then p/(p+q) and p+q are positive
So, insufficient
Both together also doesn't seems to give the answer.
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SVP
Joined: 30 Oct 2003
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Location: NewJersey USA
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p/(p+q) > 0 if p is -ve then (p+q) is -ve
same holds good for q/(p+q)
I think it should be E.
If it is from kaplan then C.
because p/(p+q) > 0 means p >0 and same holds good for q.
so p+q > 0
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CEO
Joined: 15 Aug 2003
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anandnk wrote: p/(p+q) > 0 if p is -ve then (p+q) is -ve same holds good for q/(p+q) I think it should be E. If it is from kaplan then C. because p/(p+q) > 0 means p >0 and same holds good for q. so p+q > 0 
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Manager
Joined: 28 Jan 2004
Posts: 210
Location: India
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Lets do it by applying the basics.
If A>X and B>Z then ,A + B > X + Z
applyinh this we will get 1>0 so it is true, by using both.
Ans. is C. (A and B are ruled out correctly by others)
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Director
Joined: 28 Oct 2003
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Say P and q are both negative.
1) a negative over a negative is a greater than zero, true.
2) a negative over a negative is a greater than zero, true.
Say P and q are both positive
1) a positive over a positive is a greater than zero, true.
2) a positive over a positive is a greater than zero, true.
So, all of these equations can potentially be true whether both terms are positive or negative.
E.
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