IMO C
from 2 and 1
x>y taking x and y both positive
say x=1, y=0.5 => 2x-2y = 1.
Or
x<y taking x an y both negative
and when x<y there will be no case 2x-2y=1 as 2x < 2y .
So we can say if both x and y are positive.
What is OA?
x and y both positive?
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Source: Beat The GMAT — Data Sufficiency |
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Fractal
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thx for your explanation, but i don't understand itshovan85 wrote:IMO C
from 2 and 1
x>y taking x and y both positive
say x=1, y=0.5 => 2x-2y = 1.
Or
x<y taking x an y both negative
and when x<y there will be no case 2x-2y=1 as 2x < 2y .
So we can say if both x and y are positive.
What is OA?
answer: c
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shovan85
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from option 2
either both x and y will be positive or both will be negative.
if positive x>y
if negative x<y as sign will change.
now with this data if you want to validate option 1 then x>y will satisfy not x <y.
so u got a concrete answer that x and y are positive.
hope this helps
either both x and y will be positive or both will be negative.
if positive x>y
if negative x<y as sign will change.
now with this data if you want to validate option 1 then x>y will satisfy not x <y.
so u got a concrete answer that x and y are positive.
hope this helps
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kvcpk
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Can you tell what the question is? I can only see 2 stmts. What is the question asking for?Fractal wrote:(1) 2x - 2y = 1
(2) x/y > 1
neither statement alone is sufficient. does anybody know a good way to check
whether the statements together are sufficient?
thx
"Once you start working on something,
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
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Fractal
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are x and y both positive?kvcpk wrote:Can you tell what the question is? I can only see 2 stmts. What is the question asking for?Fractal wrote:(1) 2x - 2y = 1
(2) x/y > 1
neither statement alone is sufficient. does anybody know a good way to check
whether the statements together are sufficient?
thx
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kvcpk
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x/y >1Fractal wrote:(1) 2x - 2y = 1
(2) x/y > 1
neither statement alone is sufficient. does anybody know a good way to check
whether the statements together are sufficient?
thx
x-y = 1/2
Let X and Y both be negative.
implies x<0, y<0
When an inequality is multiplied by negative value, its inequality sign changes.
x/y >1
Multiply by y [y is negative]
Hence x<y
which means x-y<0
but x-y =1/2 >0 [according to stmt1]
Hence X and Y both cant be negative
Let x be positive and y be negative.
Same situation as above arises.
Let x be negative and y be positive.
x/y>1
x>y
But a negative value can never be greater than a positive value.
hence this possibility is also lost.
only left out possibility is both are positive.
We dont have to check it. But let us see how it goes.
x>0,y>0
x/y>1
x>y
x-y>0
x-y = 1/2
All the stmts are satisfied.
Hope this helps!!
"Once you start working on something,
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
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ankur.agrawal
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Can we do it this way:
2x-2y=1 can be reframed as;
2(x-y) =1; So (x-y) = 1/2;-------(1)
& from 2;
(x/y)-1>0
(x-y)/y>0
Now since x-y=1/2 means x>y
& since (x-y)/y>0 y has to be + since x-y is positive.
Hence both are positive.
DOES THAT MAKES SENSE?
2x-2y=1 can be reframed as;
2(x-y) =1; So (x-y) = 1/2;-------(1)
& from 2;
(x/y)-1>0
(x-y)/y>0
Now since x-y=1/2 means x>y
& since (x-y)/y>0 y has to be + since x-y is positive.
Hence both are positive.
DOES THAT MAKES SENSE?
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HPengineer
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[email protected]
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IMO E:
St:1: x-y=0.5
St 2: x>y
poss options.. x=0;y=-0.5
x can be either positive o negative right?? hence not sufficient
St:1: x-y=0.5
St 2: x>y
poss options.. x=0;y=-0.5
x can be either positive o negative right?? hence not sufficient
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diebeatsthegmat
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ohh this is confusing... some books say O is not negative or positive.. its just zero...[email protected] wrote:IMO E:
St:1: x-y=0.5
St 2: x>y
poss options.. x=0;y=-0.5
x can be either positive o negative right?? hence not sufficient
so i think 0 is not consider here....
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shovan85
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After combining both if you consider x=0;y=-0.5 then how will you agree with the second option which says x/y > 1 as from ur choices x/y = 0 which is < 1.[email protected] wrote:IMO E:
St:1: x-y=0.5
St 2: x>y
poss options.. x=0;y=-0.5
x can be either positive o negative right?? hence not sufficient
Hope this makes sense
If the problem is Easy Respect it, if the problem is tough Attack it
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[email protected]
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Ah shovan thanks man..After combining both if you consider x=0;y=-0.5 then how will you agree with the second option which says x/y > 1 as from ur choices x/y = 0 which is < 1.
t prob dr i realised.. i multiplied the inequality not considering the sign o it..
this is a big no no.. thanks anyway
