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Kale has more nutritional value than spinach. But since collard greens

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

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New post Updated on: 07 Apr 2019, 23:36
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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


Project CR Butler:Day 40:Critical Reasoning (CR2)


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Originally posted by parasena on 23 Jun 2012, 21:17.
Last edited by Bunuel on 07 Apr 2019, 23:36, edited 1 time in total.
Edited the question.
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 24 Jun 2012, 19:56
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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 collard greens  [#permalink]

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New post 08 Jul 2012, 08:10
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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 collard greens  [#permalink]

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New post 12 Jul 2012, 03:47
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 collard greens  [#permalink]

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New post 10 Sep 2014, 13:51
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 collard greens  [#permalink]

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New post 20 Dec 2015, 07:27
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 collard greens  [#permalink]

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New post 27 Feb 2017, 04:19
Subject question can be solved mathematically by making inequalities and finally it would lead to A.
Input: K>S, C>L ===> K>L?

A. C>K, tha gives us no solid evidence to assume that in fact K>L. That's possible answer.
B. S>L, direcltly leads to K>L
C. S>C, directly leads to K>L
D. S=C, leads to K>C and directly denotes that K>L

Thus, A is the only possible option for this "EXCEPT" question, as long as other options obviously strengthens the claim.
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 20 Aug 2017, 06:34
A is the correct answer.

Premise 1 - K>S
Premise 2 - C>L
Assumption 1- S>L
Assumption 2- S>C
Assumption 3- S=C
Assumption 4- K=C
Except- C>K
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 18 Sep 2018, 09:15
Read the question carefully. The word "EXCEPT" is very important to note. If you skip the last word then you might fall into the trap.

Once you have made a note of this word "EXCEPT" then it is easy to understand that all the 4 options (B-E) satisfy the conditions given in stimulus "EXCEPT" option A.

Hence Option A is the correct ans.
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 01 Oct 2018, 09:11
Official Explanation:-

Argument Construction

Situation Using the symbol > to mean “has (or have) more nutritional value than,” this statement can be expressed as kale > spinach, and collard greens > lettuce. The conclusion that kale > lettuce remains valid if all but one of the premises is added.

Reasoning Which premise makes the conclusion incorrect? The information given in the passage is that kale > spinach and that collard greens > lettuce. This is not enough to conclude that kale > lettuce; another premise is needed to establish the relative nutritional value of kale and lettuce. Look at each premise offered in the answers to see whether the conclusion kale > lettuce remains valid. The ranking of vegetables may change with the additional premises; the conclusion, kale > lettuce, must not change. Find the one answer that does NOT support the conclusion.

A Correct. This statement properly identifies an additional premise that would invalidate the argument. If collard greens > kale, then it is possible that lettuce > kale, because the ranking could be collard greens > lettuce > kale > spinach.

B If spinach > lettuce, then kale > lettuce because kale > spinach.

C If spinach > collard greens, then kale > lettuce because the ranking would then be kale > spinach > collard greens > lettuce.

D If spinach = collard greens, then kale > lettuce because the ranking would be kale > spinach = collard greens > lettuce.

E If kale = collard greens, then kale > lettuce because kale = collard greens > lettuce.

The correct answer is A.
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 29 Dec 2018, 23:34
Isnt the 2nd statement wrongly phrased or constructed?

there are 2 dependent clauses separated by ","

"But since....., if follows.."

confused me at least
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 29 Dec 2018, 23:53
kaustavkarmakar wrote:
Isnt the 2nd statement wrongly phrased or constructed?

there are 2 dependent clauses separated by ","

"But since....., if follows.."

confused me at least


take it as

"But since....., it follows.."
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Re: Kale has more nutritional value than spinach. But since collard greens  [#permalink]

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New post 20 Jun 2019, 03:32
This is more of a quant question then CR
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Re: Kale has more nutritional value than spinach. But since collard greens   [#permalink] 20 Jun 2019, 03:32
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