If abc cannot =0, what is the value of ab/c? 1. a/4=c^2 and : DS Archive
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If abc cannot =0, what is the value of ab/c? 1. a/4=c^2 and

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If abc cannot =0, what is the value of ab/c? 1. a/4=c^2 and [#permalink]

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23 Oct 2005, 00:57
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If abc cannot =0, what is the value of ab/c?

1. a/4=c^2 and bc=12
2. a/b=1/3 and a/c^2=4
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23 Oct 2005, 01:17
GMATT73 wrote:
If abc cannot =0, what is the value of ab/c?

1. a/4=c^2 and bc=12
2. a/b=1/3 and a/c^2=4

1. a/4= c^2=> a/c^2= 4 => a/c^2* bc= ab/c= 12*4= 48
suff
2. we can only conclude that ab/c = 48c^4/c = 48c^3
insuff
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23 Oct 2005, 02:59
Great explanation laxie. I didn`t see that substitution trick in statement 1.
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23 Oct 2005, 06:39
from i,
a/4=c^2....... so, a/c=4c
bc = 12 .........., b = 12/c
now substitute in ab/c=(a/c)b
(4c)(12/c)=48

from ii, its not possible. so A is good enough........
Re: DS Kaplan CAT#2   [#permalink] 23 Oct 2005, 06:39
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