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Junior | Next Rank: 30 Posts
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by gupta.amit3 » Sun Nov 09, 2008 8:39 am
Couldn't get WHY the answer is C and not D. Can anyone pls help.

thanks in advance.
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Source: — Data Sufficiency |
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by stop@800 » Sun Nov 09, 2008 10:59 am
we need to find s=3r+2

A
s= 3r+2 or s=4r+9 or both
insuff
pt may or may not lie
wrt s= 3r+2 it lies
but
wrt s=4r+9 it does not lie

B
s=4r-6 or s=3r+2 or both
insuff

A+B
we have only one common equn
that is
s=3r+2
which is what we desire
hence ans is C
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Junior | Next Rank: 30 Posts
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by jayjk78 » Mon Nov 10, 2008 9:02 pm
Stop 800 can you please explain the stem of the question. Coor geo just zoomz over my head.
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