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Slope of line l vs slope of line p

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Source: — Data Sufficiency |
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by prachich1987 » Mon Jan 10, 2011 8:24 am
IMO : C
what's the source?
Last edited by prachich1987 on Mon Jan 10, 2011 8:28 am, edited 1 time in total.
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by Deepthi Subbu » Mon Jan 10, 2011 8:46 am
prachich1987 wrote:IMO : C
what's the source?
Correct ,how did you arrive at the solution . Just some random test paper.
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by arora007 » Mon Jan 10, 2011 9:03 am
!! ladies....need some enlightenment !!
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by anshumishra » Mon Jan 10, 2011 9:06 am
Deepthi Subbu wrote:
prachich1987 wrote:IMO : C
what's the source?
Correct ,how did you arrive at the solution . Just some random test paper.
Equation of line n : y = m1*x + c1
Equation of line p : y = m2*x + c2

Question : m1 < m2 ?

Statement 1:
1=5*m1+c1 = 5*m2+c2
=> 5*(m1-m2) = c2 - c1 --- Insufficient
We need to know the sign of c2-c1.

Statement 2:
c1 > c2
=> c1-c2 > 0 --- Insufficient , As we can't predict relationship between m1 and m2

Combining 1 and 2 :
Sufficient , as shown above :
5*(m1-m2) = c2 - c1 = -ve --- Sufficient

Hence "C".
Thanks
Anshu

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by prachich1987 » Mon Jan 10, 2011 9:09 am
Deepthi Subbu wrote:
prachich1987 wrote:IMO : C
what's the source?
Correct ,how did you arrive at the solution . Just some random test paper.
https://www.manhattangmat.com/forums/lin ... -t645.html

https://www.beatthegmat.com/gmat-prep-ge ... 14275.html

Hope it helps
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by Deepthi Subbu » Mon Jan 10, 2011 9:21 am
arora007 wrote:!! ladies....need some enlightenment !!
I did try a method , wanted to confirm if my approach is correct . And yes , I am able to see that the method is right .

There's a famous adage that says 'Knowledge is wealth'.
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by arora007 » Mon Jan 10, 2011 9:54 am
Deepthi Subbu wrote:
arora007 wrote:!! ladies....need some enlightenment !!
I did try a method , wanted to confirm if my approach is correct . And yes , I am able to see that the method is right .

There's a famous adage that says 'Knowledge is wealth'.
I am enlightened!! Attained Nirvana with a perfect 800 ;-)
https://www.skiponemeal.org/
https://twitter.com/skiponemeal
Few things are impossible to diligence & skill.Great works are performed not by strength,but by perseverance

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