Kale has more nutritional value than spinach. But since : GMAT Critical Reasoning (CR)
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# Kale has more nutritional value than spinach. But since

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Kale has more nutritional value than spinach. But since [#permalink]

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23 Jun 2012, 20:17
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Kale has more nutritional value than spinach. But since collard greens have more nutritional value than lettuce, if follows that kale has more nutritional value than lettuce.

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

A. Collard greens have more nutritional value than kale
B. Spinach has more nutritional value than lettuce
C. Spinach has more nutritional value than collard greens
D. Spinach and collard greens have the same nutritional value
E. Kale and collard greens have the same nutritional value
[Reveal] Spoiler: OA
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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24 Jun 2012, 08:37
Answer is A. As other options support the argument
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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24 Jun 2012, 18:56
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A good strategy is to set up a little diagram, in which you position the different vegetables.

Kale > Spinach Collard Greens > Lettuce

Conclusion: Kale > Lettuce

We can go through each answer choice and see which one does not reinforce the diagram above.

Starting with (A) we can see that if collard greens have more nutritional value than kale, then there is no way we can determine whether kale is healthier than lettuce:

Collard Greens > Lettuce > Kale
Collard Greens > Kale > Lettuce

Either scenario is valid. However, the first scenario goes against the conclusion and is therefore the answer.

Hope that helps .
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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08 Jul 2012, 07:10
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Kale has more nutritional value than spinach. But since collard greens have more nutritional value than lettuce, if follows that kale has more nutritional value than lettuce.
Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT:

Let K = Kale
S = Spinach
C = Collard
L = lettuce
Given :
1) K >S
2)C>L
Conclusion
3)K>L

A. Collard greens have more nutritional value than kale
The choice says : C >K ... (a)
From (1) , (2) and (a)
C>L
C>K>S
From this we can't conclude that C>K. This may be true, may not be true. We don't know. Hence (A) can't be the additinal premise. Hence (A) is the answer.
B. Spinach has more nutritional value than lettuce
The choice says : S > L .... (b)
From (1) and (b)
K>S>L
Hence K>L ... which is the conclusion. Hence this choice can be the additional premise.
C. Spinach has more nutritional value than collard greens
The choice says : S > C ....(c)
From (1) , (2)and ( c)
K>S>C>L
Hence K>L ... which is the conclusion. Hence this choice can be the additional premise.
D. Spinach and collard greens have the same nutritional value
The choice says : S = C ....(d)
From (1) , (2)and ( d)
K>S=C>L
Hence K>L ... which is the conclusion. Hence this choice can be the additional premise.
E. Kale and collard greens have the same nutritional value
The choice says : K=C ....(e)
From (2)and ( e)
K=C>L
Hence K>L ... which is the conclusion. Hence this choice can be the additional premise.

+++++++++++++++

Also , refer to kale-has-more-nutritional-value-than-spinach-but-since-12458.html?hilit=Kale%20has%20more%20nutritional%20value%20than%20spinach.%20But%20since
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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12 Jul 2012, 02:47
DS question with a little bit of IR:-)

Is K>L?

(i)K>S
(ii) C>L

(A) shows C>K but C is already greater than L so, can't say if K>L.

(A) Wins
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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27 Feb 2014, 09:31
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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10 Sep 2014, 12:51
Answer A. Time to solve: 30 sec
K>S and C>L --> K>L so K must be > C
A) Says C>K --> Wrong
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Re: Kale has more nutritional value than spinach. But since [#permalink]

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20 Dec 2015, 06:27
parasena wrote:
Kale has more nutritional value than spinach. But since collard greens have more nutritional value than lettuce, if follows that kale has more nutritional value than lettuce.

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

A. Collard greens have more nutritional value than kale
B. Spinach has more nutritional value than lettuce
C. Spinach has more nutritional value than collard greens
D. Spinach and collard greens have the same nutritional value
E. Kale and collard greens have the same nutritional value

Kale - K
Spinach - S
Collard Greens - C
Lettuce - L

Given K > S. Since C > L, thus K > L.
For the last if then case, to be true, either K > C or/and L > S.
So, anything that goes against the above rules is the coorect AO.
A says K < C. No need to check further or make an attempt to eliminate other options! A is correct.
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Re: Kale has more nutritional value than spinach. But since   [#permalink] 20 Dec 2015, 06:27
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