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If a, b, and c are integers, is a - b + c greater than a + b

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If a, b, and c are integers, is a - b + c greater than a + b [#permalink]

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If a, b, and c are integers, is a - b + c greater than a + b - c?

(1) b is negative
(2) c is positive
[Reveal] Spoiler: OA

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Re: if a, b, and c are integers, is a - b + c greater than a+ b [#permalink]

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Re: If a, b, and c are integers, is a - b + c greater than a+ b [#permalink]

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New post 18 Mar 2012, 02:25
fiendex 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



bunuel,

how did u arrive at 2c>2b? --> is c>b?
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Re: If a, b, and c are integers, is a - b + c greater than a+ b [#permalink]

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New post 18 Mar 2012, 06:42
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Re: If a, b, and c are integers, is a - b + c greater than a+ b [#permalink]

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New post 18 Mar 2012, 09:30
hi,

Required Proof : a-b+c>a+b-c => (since integers) 2c>2b (we are not multiplying with a negative sign hence no sign change) => c>b

Now to prove this

Statement 1 : B is negative
We dont know anything about C so Insufficient

Statement 2 : C is positive
We dont know anything about B so Insufficient

Combine : C positive & B Negative

Hence C > B

Sufficient

Hope this helps
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Re: If a, b, and c are integers, is a - b + c greater than a + b [#permalink]

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Re: If a, b, and c are integers, is a - b + c greater than a + b [#permalink]

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New post 13 Mar 2016, 08:52
HERE the question is asking for if B<C or not..
Clearly C is sufficient
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Re: If a, b, and c are integers, is a - b + c greater than a + b   [#permalink] 13 Mar 2016, 08:52
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