If a,b, and c are integers, is a - b + c greater than a + b - c ?
(1) b is negative.
(2) c is positive.
stem: is a-b+c > a+b-c
is a+2c>a+2b ?
from 1 & 2.. we can say that a+2c is always greater than a+2b.. (for both a as +ve and -ve) hence Answer is C
is the above approach right ?
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is a – b + c greater than a + b – c ?
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harsh.champ
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Yes,your approach is perfectly fine.Nijeesh wrote:If a,b, and c are integers, is a - b + c greater than a + b - c ?
(1) b is negative.
(2) c is positive.
stem: is a-b+c > a+b-c
is a+2c>a+2b ?
from 1 & 2.. we can say that a+2c is always greater than a+2b.. (for both a as +ve and -ve) hence Answer is C
is the above approach right ?
a-b+c > a+b-c
This implies that a+2c>a+2b
Now, b<0
and c>0
Hence,c>b
So,both statements together are sufficient.C.
Hence,your answer holds.
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shashank.ism
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to check: a-b+c > a+b-c --> -b+c>b-cNijeesh wrote:If a,b, and c are integers, is a - b + c greater than a + b - c ?
(1) b is negative.
(2) c is positive.
stem: is a-b+c > a+b-c
is a+2c>a+2b ?
from 1 & 2.. we can say that a+2c is always greater than a+2b.. (for both a as +ve and -ve) hence Answer is C
is the above approach right ?
St.1) b is negative , b<0 -->not suff we don't sign of a and c
St.2) c is positive. c>0 --> not suff we don't know sign of a and b
combined ) b<0 and c>0 so -b+c > b-c hence suff.Ans C
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lunarpower
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why aren't you guys simplifying the question all the way?
viz.:
IS a - b + c > a + b - c ?
cancel the a's:
is -b + c > b - c ?
add b to both sides, AND add c to both sides:
is 2c > 2b?
divide by 2:
Is c > b ?
this is the simplified question.
what's ... interesting is that TWO posters did HALF-simplifications (one of you got to "-b+c>b-c" and the other to "a+2c>a+2b", but neither of those posters went all the way to the simplified version)
with this question, it's much easier to see that the answer is (c).
viz.:
IS a - b + c > a + b - c ?
cancel the a's:
is -b + c > b - c ?
add b to both sides, AND add c to both sides:
is 2c > 2b?
divide by 2:
Is c > b ?
this is the simplified question.
what's ... interesting is that TWO posters did HALF-simplifications (one of you got to "-b+c>b-c" and the other to "a+2c>a+2b", but neither of those posters went all the way to the simplified version)
with this question, it's much easier to see that the answer is (c).
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Pueden hacerle preguntas a Ron en castellano
Potete chiedere domande a Ron in italiano
On peut poser des questions à Ron en français
Voit esittää kysymyksiä Ron:lle myös suomeksi
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Quand on se sent bien dans un vêtement, tout peut arriver. Un bon vêtement, c'est un passeport pour le bonheur.
Yves Saint-Laurent
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Learn more about ron
