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Kobayashi coffee has more caffeine than Marlowe Select

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Intern
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Kobayashi coffee has more caffeine than Marlowe Select [#permalink] New post 30 Sep 2012, 06:29
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

94% (02:37) correct 6% (02:27) wrong based on 52 sessions
Kobayashi coffee has more caffeine than Marlowe Select coffee. But since Chula Vista coffee has more caffeine than Valentino coffee, it follows that Kobayashi coffee has more caffeine than Valentino coffee.

Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT?

(A) Marlowe Street coffee has more caffeine than Valentino
coffee.
(B) Marlowe Street corree has more caffeine than Chula Vista
coffee.
(C) Marlowe Street and Chula Vista coffees have the same
amount of caffeine.
(D) Kobayashi and Chula Vista coffees have the same amount of
caffeine.
(E) Chula Vista coffee has more caffeine than Kobayashi coffee.
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Re: Kobayashi coffee has more caffeine than Marlowe Select coffe [#permalink] New post 30 Sep 2012, 06:31
rahulbsai wrote:
Kobayashi coffee has more caffeine than Marlowe Select coffee. But since Chula Vista coffee has more caffeine than Valentino coffee, it follows that Kobayashi coffee has more caffeine than Valentino coffee.

Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT?

(A) Marlowe Street coffee has more caffeine than Valentino
coffee.
(B) Marlowe Street corree has more caffeine than Chula Vista
coffee.
(C) Marlowe Street and Chula Vista coffees have the same
amount of caffeine.
(D) Kobayashi and Chula Vista coffees have the same amount of
caffeine.
(E) Chula Vista coffee has more caffeine than Kobayashi coffee.


I think the answer is E. I got K>M>C>V and only 5th option(C>K) will weaken the argument. Please let me know if this approach is correct. Thanks.
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Re: Kobayashi coffee has more caffeine than Marlowe Select coffe [#permalink] New post 30 Sep 2012, 06:55
Another support for E, as thats the only one which logically supports this. If we know c>k we dont know whether it is :

c>v>k
or
C>k>v

Hence doesn't make the argument logically correct
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Re: Kobayashi coffee has more caffeine than Marlowe Select coffe [#permalink] New post 30 Sep 2012, 10:09
E is the only choice when introduced as additional premise will invalidate the conclusion - it follows that Kobayashi coffee has more caffeine than Valentino coffee
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Re: Kobayashi coffee has more caffeine than Marlowe Select [#permalink] New post 19 Mar 2013, 01:12
Kobayashi coffee has more caffeine than Marlowe Select coffee. But since Chula Vista coffee has more caffeine than Valentino coffee, it follows that Kobayashi coffee has more caffeine than Valentino coffee.
Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT?
(A) Marlowe Street coffee has more caffeine than Valentino coffee.
(B) Marlowe Street corree has more caffeine than Chula Vista coffee.
(C) Marlowe Street and Chula Vista coffees have the same amount of caffeine.
(D) Kobayashi and Chula Vista coffees have the same amount of caffeine.
(E) Chula Vista coffee has more caffeine than Kobayashi coffee.

% of Caffeine in Kobayashi coffee= K
% of Caffeine in Marlowe Select coffee = M
% of Caffeine in Chula Vista coffee = C
% of Caffeine in Valentino coffee = V
Premise 1 - K > M
Premise 2 - C > V
Conclusion - K > V
Option A - M > V - Concurs with the conclusion
Option B - M > C - Concurs with the conclusion
Option C - M = C - Concurs with the conclusion
Option D - K = C - Concurs with the conclusion
Option E - C > K - Does not Concurs with the conclusion because if C >K, then we can not be sure whether K>V because two cases are possible
C > V > K
C > K > V

Thus E is the correct answer.
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Re: Kobayashi coffee has more caffeine than Marlowe Select [#permalink] New post 19 Mar 2013, 02:26
Only E stands here....
given K>M
C>V
so K>V
look for option that says
M=C
M>V
K>C

Consider kudos if my post helps!!

Archit
Re: Kobayashi coffee has more caffeine than Marlowe Select   [#permalink] 19 Mar 2013, 02:26
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