Is r > s ? (1) -r + s < 0 (2) r < | s |

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Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

29 Jan 2012, 18:54

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82% (01:39) correct

17% (00:42) wrong

based on 3 sessions

Is r > s ?

(1) -r + s < 0
(2) r < | s |

Well, 1st one is clear but I have some difficulties with second statement. I guessed it's not sufficient but need clarification. Thank you!

[Reveal] Spoiler: OA

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Re: Is r > s ? [#permalink]

29 Jan 2012, 19:02

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DesecratoR wrote:

Is r > s ?

(1) -r + s < 0
(2) r < | s |

Well, 1st one is clear but I have some difficulties with second statement. I guessed it's not sufficient but need clarification. Thank you!

Welcome to GMAT Club. Below is a solution for this problem.

Is r>s?

(1) -r+s<0 --> rearrange (or add r to both parts): s<r, directly answers the question. Sufficient.

(2) r<|s| --> either r<s or r<-s (for example r=1 and s=2 OR r=1 and s=-2). Not sufficient.

Basically this statement tells that absolute value of s is more than r, but s itself may be more, as well as less than r.

Answer: A.

Hope it's clear.
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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

29 Jan 2012, 19:07

Clear, thanks! See you around!
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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

21 Feb 2012, 22:38

Thanks but I am struggling with statement II

The statement tells us that
a) r<-s or :
s -s r r<-s? r>s?
5 -5 6 No
-5 5 -6 Yes No

b) r<s : r cannot be greater than S

both the substatements say thar r is not greater than s therefor should be sufficient

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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

21 Feb 2012, 23:41

devinawilliam83 wrote:

(2) r<|s| --> either r<s OR r<-s. Now, try some number to see that this statement is not sufficient: if r=1 and s=2 then r<s BUT if r=1 and s=-2 then r>s.

Again: this statement tells that absolute value of s is more than r, but s itself may be more, as well as less than r.

Hope it's clear.
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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

22 Feb 2012, 04:11

A

(I) rearrange to s<r --> sufficient
(II) r < | s | --> r can be smaller s (5<6) or greater s (5>-6), absolute value hide the positive or negative sign --> not sufficient

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Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

15 Nov 2012, 21:44

Lolaergasheva wrote:

Is r > s ?

(1) -r + s < 0
(2) r < | s |

Is r>s?

(1) -r+s<0
so s<r
so for question answer will be "yes"
So (1) is sufficient

(2) r<|s|
If s is positive sufficient
If s is negative not sufficient.
So (2) is also not sufficient

A

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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

04 Dec 2012, 02:40

Is r > s ?

(1) -r + s < 0
Manipulate -r + s > 0 ==> s > r ==> NO! ==> SUFFICIENT!

(2) r < | s |
Let r = 5, s = -6 ==> r > s ? YES!
Let r = 5, s = 6 ==> r > s ? NO!
INSUFFICIENT!

Answer: A

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Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink]

04 Dec 2012, 20:36

Another way to look at the second statement is this. this will save u a lot of time. won't even have to plug in for this.

Remember that |x| >y (or any such relation, no matter >,< or =) can be written as
-y>x>y.
(that is, just remember to keep the relation the same and just put negative on the left hand side and positive on the right hand side.)

so... statement 2 says r<|S|
meaning |s|>r ==> -r>s>r

so on the left hand side, S lies further left of -r, such that if r is 2 and thus -r is -2, s is even less and so s is -3 thus s is less than r, and so the main queston r>s is answered yes. but on the right hand side, s>r so the main question is answered no. hence stmt 2 is not sufficient.

DesecratoR wrote:

Is r > s ?

(1) -r + s < 0
(2) r < | s |

Well, 1st one is clear but I have some difficulties with second statement. I guessed it's not sufficient but need clarification. Thank you!

Re: Is r > s ? (1) -r + s < 0 (2) r < | s | [#permalink] 04 Dec 2012, 20:36

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