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for decades, countries have measured wheat field productivity using th

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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 10 Apr 2016, 06:36
11
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A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

37% (02:02) correct 63% (02:00) wrong based on 239 sessions

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for decades, countries have measured wheat field productivity using the Wheat Field Productivity Index (WFPI), which is equal to the average number of pounds of grain harvested per acre of wheat. In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI. In 2006, Maltania's WFPI was 75 pound per acre more than Italy's. Therefore, Malania's wheat field productivity must have increased during that period.

Which of the following, IF TRUE, provides strongest support for the conclusion above?


    A. Between 2005 and 2006, the number of acres of wheat planted in both Maltania and Italy has increased by same rate.
    B. In 2006, Malatania received 20% more sunshine than usual.
    C. Between 2005 and 2006, Italy's wheat field productivity decreased by 10 pound per acre.
    D. In 2006, Italy experienced its worst drought in decades,
    E. In 2006, Malatania began subsidizing all of its wheat farmer.

I looking for some good discussion, will post the official explanation 10 reasoned responses and discussion.
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Re: for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 22 May 2016, 10:24
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C is the correct answer.

In 2005: M = I + 60
In 2006: M = I' + 75

I' = I - 10

=> In 2006: M = I - 10 + 75 = I + 65. Therefore more than in 2005.

Hope this helps.
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Re: for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 11 Apr 2016, 01:20
sameerspice wrote:
for decades, countries have measured wheat field productivity using the Wheat Field Productivity Index (WFPI), which is equal to the average number of pounds of grain harvested per acre of wheat. In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI. In 2006, Maltania's WFPI was 75 pound per acre more than Italy's. Therefore, Malania's wheat field productivity must have increased during that period.

Which of the following, IF TRUE, provides strongest support for the conclusion above?


    A. Between 2005 and 2006, the number of acres of wheat planted in both Maltania and Italy has increased by same rate.
    B. In 2006, Malatania received 20% more sunshine than usual.
    C. Between 2005 and 2006, Italy's wheat field productivity decreased by 10 pound per acre.
    D. In 2006, Italy experienced its worst drought in decades,
    E. In 2006, Malatania began subsidizing all of its wheat farmer.

I looking for some good discussion, will post the official explanation 10 reasoned responses and discussion.


How C is the Answer.
If Italy's production has decreased how does that prove that Malatania's production has increased?
In order to prove that Malatania's production per acre has increased we need to prove that Italy's prodcution has remained same or that Italy didnt drastically increase its number of acres it planted wheat?
Please post officiall explanation :S
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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 14 May 2016, 04:30
Decrease in Italy's wheat field productivity has no relation to the productivity of Malania..
C is definitely wrong...


B or E can be taken as strengthening points "with some assumptions"..

Can some CR/verbal experts comment on this CR question?

sameerspice , Could you please post official explanation for the answer choices?
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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 14 May 2016, 06:18
For Maltnia's Productivity to increase, You have to make sure that Italy's Productivity doesn't fall below than 60 P/A.Option C exactly make sure of that. All you have to do is not to fall in to a trap word ‘ decrease' 'cau its a small decrease.
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Re: for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 14 May 2016, 09:04
Ram025 wrote:
For Maltnia's Productivity to increase, You have to make sure that Italy's Productivity doesn't fall below than 60 P/A.Option C exactly make sure of that. All you have to do is not to fall in to a trap word ‘ decrease' 'cau its a small decrease.


C is wrong, I tell you why

for decades, countries have measured wheat field productivity using the Wheat Field Productivity Index (WFPI), which is equal to the average number of pounds of grain harvested per acre of wheat. In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI. In 2006, Maltania's WFPI was 75 pound per acre more than Italy's. Therefore, Malania's wheat field productivity must have increased during that period.


Conclusion is that Malta's productivity has increased
Fact 1: In 2005--M=I+60
Fact2 : In 2006--M=I +75

therefore, to increase productivity M= I+75+(x)--> where x is the increase in productivity
C says that I has decreased its producivity by 10%
so it may be M=I+75-x as well as M=I+75+x

So C is clearly flawed.

I chose B because 20% more sunshine means more productivity. Though I assumed that I has same sunshine as before and high sunshine=high productivity.
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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 17 Jul 2018, 19:50
sameerspice wrote:
for decades, countries have measured wheat field productivity using the Wheat Field Productivity Index (WFPI), which is equal to the average number of pounds of grain harvested per acre of wheat. In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI. In 2006, Maltania's WFPI was 75 pound per acre more than Italy's. Therefore, Malania's wheat field productivity must have increased during that period.

Which of the following, IF TRUE, provides strongest support for the conclusion above?


    A. Between 2005 and 2006, the number of acres of wheat planted in both Maltania and Italy has increased by same rate.
    B. In 2006, Malatania received 20% more sunshine than usual.
    C. Between 2005 and 2006, Italy's wheat field productivity decreased by 10 pound per acre.
    D. In 2006, Italy experienced its worst drought in decades,
    E. In 2006, Malatania began subsidizing all of its wheat farmer.

I looking for some good discussion, will post the official explanation 10 reasoned responses and discussion.


Break Argument:
In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI
In 2006, Maltania's WFPI was 75 pound per acre more than Italy's
Conclution:
Malania's wheat field productivity must have increased during that period.

This is definitely a weak argument.
Example:
2005: M=500; I= 440
2006: M=400; I=325
=>weaken

Here is why C strenthens argument

Author reasoning is that
M05 and M06: wheat field productivity of M in 2005 and 2006
I05 and I06: wheat field productivity of N in 2005 and 2006
M05-I05=60
M06-I06=75
I05=I06+10
=>M06-M05=I06+75-I05-60=I06+15-I06-10=5>0. With C, M06 always larger than M05.
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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 18 Jul 2018, 04:34
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Let me explain this to you.

For decades, countries have measured wheat field productivity using the Wheat Field Productivity Index (WFPI), which is equal to the average number of pounds of grain harvested per acre of wheat. In 2005, Mlatnia's WFPI was 60 pound per acre more than Italy's WFPI. In 2006, Maltania's WFPI was 75 pound per acre more than Italy's. Therefore, Malania's wheat field productivity must have increased during that period.

Which of the following, IF TRUE, provides strongest support for the conclusion above?

A. Between 2005 and 2006, the number of acres of wheat planted in both Maltania and Italy has increased by same rate.
B. In 2006, Malatania received 20% more sunshine than usual.
C. Between 2005 and 2006, Italy's wheat field productivity decreased by 10 pound per acre.
D. In 2006, Italy experienced its worst drought in decades,
E. In 2006, Malatania began subsidizing all of its wheat farmer.

Explanation : In the argument presented, the conclusion is that Maltania's WFPI increased during the period from 2005 to 2006. We need to find the statement that strengthens the conclusion. Now, look at the figures mentioned in the argument closely. In 2005, Maltania's WFPI was 60 pound/acre more than that of Italy.
In 2006, the difference grew bigger with Maltania's WFPI 75 pound/acre more than that of Italy.

Let us now look at the answer choice C first. It says that Italy's WFPI actually decreased by 10 pound/acre.
But if you notice the difference in the increase from 2005 and 2006, it is 15 pound/acre. So, if Italy's WFPI decreased by 10 pound/acre, so if WFPI of
maltania remained the same, the difference would have been 70 pound/acre. But as per the argument, it is 75 pound/acre. So, for that to happen, the WFPI
of maltania has to increase.

Thanks !
Pass on Kudos please if you like my response !
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for decades, countries have measured wheat field productivity using th  [#permalink]

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New post 18 Jul 2018, 05:48
[color=#ec008c][wrapimg=Let me explain this to you.
........
......
Explanation : In the argument presented, the conclusion is that Maltania's WFPI increased during the period from 2005 to 2006. We need to find the statement that strengthens the conclusion. Now, look at the figures mentioned in the argument closely. In 2005, Maltania's WFPI was 60 pound/acre more than that of Italy.
In 2006, the difference grew bigger with Maltania's WFPI 75 pound/acre more than that of Italy.

Let us now look at the answer choice C first. It says that Italy's WFPI actually decreased by 10 pound/acre.
But if you notice the difference in the increase from 2005 and 2006, it is 15 pound/acre. So, if Italy's WFPI decreased by 10 pound/acre, so if WFPI of
maltania remained the same, the difference would have been 70 pound/acre. But as per the argument, it is 75 pound/acre. So, for that to happen, the WFPI
of maltania has to increase.]


Thanks !
Pass on Kudos please if you like my response !

[/wrapimg][/color]

Thanks for the explanation.
This is more clear and hence more convincing.

In a CR question no will like to think or pick up numbers and do math as explained in some of the posts here. However, noticing the difference within given numbers is quite a feasible approach.

Thanks.
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for decades, countries have measured wheat field productivity using th &nbs [#permalink] 18 Jul 2018, 05:48
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