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United States and the Soviet Union in terms of crop yields

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United States and the Soviet Union in terms of crop yields [#permalink] New post 11 Feb 2016, 06:52
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A ten-year comparison between the United States and the Soviet Union in terms of crop yields per acre revealed that when only planted acreage is compared, Soviet yields were equal to 68 percent of United States yields. When total agricultural acreage (planted acreage plus fallow acreage) is compared, however, Soviet yield was 114 percent of United States yield.

From the information above, which of the following can be most reliably inferred about United States and Soviet agriculture during the ten-year period?

A A higher percentage of total agricultural acreage was fallow in the United States than in the Soviet Union.
B The United States had more fallow acreage than planted acreage.
C Fewer total acres of available agricultural land were fallow in the Soviet Union than in the United States.
D The Soviet Union had more planted acreage than fallow acreage.
E The Soviet Union produced a greater volume of crops than the United States produced.

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Question: 2
Page: 71
Difficulty: hard
[Reveal] Spoiler: OA

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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 11 Feb 2016, 06:54
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Explanation



If crop yield per planted acre was less in the Soviet Union than it was in the United States, yet crop yield per total (planted plus fallow) agricultural acreage was greater in the Soviet Union than it was in the United States, the percentage of the total acreage that was left fallow must have been lower in the Soviet Union than in the United States.

Therefore, Choice A is the correct answer. Since the information provided in the paragraph is given in terms of yield per acre, no conclusion can be drawn about actual acreage, so Choices B, C, and D are all incorrect. Similarly, it is impossible to determine the total volume of crops produced in the Soviet Union, so Choice E is incorrect.
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 03 Mar 2018, 01:09
Can anyone give the reason why A is correct . i feel very difficult to comprehend the exp
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 03 Mar 2018, 03:59
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when only planted acreage is compared

S < US

When total agricultural acreage

S > US

We care only of percentage of total agricultural acreage

if you read the other answer choice they talk about planted acreage or volume of the acreage NOT percentage.

You should read very carefully.

A is the best choice.
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 03 Aug 2019, 01:46
Carcass wrote:
when only planted acreage is compared

S < US

When total agricultural acreage

S > US

We care only of percentage of total agricultural acreage

if you read the other answer choice they talk about planted acreage or volume of the acreage NOT percentage.

You should read very carefully.

A is the best choice.




Please explain in details. It is very tough question indeed.
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 06 Aug 2019, 00:25
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1)
A ten-year comparison between the United States and the Soviet Union in terms of crop yields per acre revealed that when only planted acreage is compared, Soviet yields were equal to 68 percent of United States yields.

Here, we are focusing on the crop yielded PER acre. However, it is crucial to keep in mind that we are comparing ONLY the planted land
For instance, US cultivate 1000 acreage and from these, it yields 100 kg of brocccoli.
Russia of the same extension has 6.8 kg of broccoli


2)
When total agricultural acreage (planted acreage plus fallow acreage) is compared, however, Soviet yield was 114 percent of United States yield.

From the information above, which of the following can be most reliably inferred about United States and Soviet agriculture during the ten-year period?

A A higher percentage of total agricultural acreage was fallow in the United States than in the Soviet Union.

This is the correct choice. From what I have highlighted above is the only thing we can infer. For russia to have 114% means that the acreage it cultivates is almost if not in its entirety exploited

B The United States had more fallow acreage than planted acreage.

This is information is only partial if any

C Fewer total acres of available agricultural land were fallow in the Soviet Union than in the United States.

The total acres area can not be inferred because we do not have enough information

D The Soviet Union had more planted acreage than fallow acreage.

We do have only information about % not quantities of planted land

E The Soviet Union produced a greater volume of crops than the United States produced.

The volume is out of scope

Hopèe now is more clear than before to you
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 14 May 2020, 00:54
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My advice for everyone here would be to imagine that we have the same acreage at the beginning.

Meaning if we compare 100 acreage from Soviet Union and USA we will get, 68% yield and 100% yield, respectively.

Now we can see that the American yield will be slightly diluted with the addition of fallow acreage, this indicated by having 114% Soviet yield and 100% American yield.

The next step would be to imagine what could cause the yield to get diluted:

In all honesty since it is stated that it is fallow (meaning that it yields nothing) we are able to assume that we will be having more fallow land added to US than to Soviet.

A math way of thinking about it is-->(original scenario 68(crop)/100(acreage) Soviet-------100/100US)-----(second scenario----->we imagine we add some increment to soviet that is so small that we can neglect it 68/100 SOVIET----100/167( meaning we add the additional acreage in amount of 67) US-->this yielding back about 114% Soviet of US
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 03 Jun 2020, 03:50
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bubidag wrote:
My advice for everyone here would be to imagine that we have the same acreage at the beginning.

Meaning if we compare 100 acreage from Soviet Union and USA we will get, 68% yield and 100% yield, respectively.

Now we can see that the American yield will be slightly diluted with the addition of fallow acreage, this indicated by having 114% Soviet yield and 100% American yield.

The next step would be to imagine what could cause the yield to get diluted:

In all honesty since it is stated that it is fallow (meaning that it yields nothing) we are able to assume that we will be having more fallow land added to US than to Soviet.

A math way of thinking about it is-->(original scenario 68(crop)/100(acreage) Soviet-------100/100US)-----(second scenario----->we imagine we add some increment to soviet that is so small that we can neglect it 68/100 SOVIET----100/167( meaning we add the additional acreage in amount of 67) US-->this yielding back about 114% Soviet of US



Hi, Thanks for the explanation.
I have once concern.

I understood the 1st part that if we compare 100 planted acreage(PA) from Soviet Union and USA we will get, 68% yield and 100% yield, respectively.
PA(Soviet)=0.68PA(US)
But in the 2nd part Soviet has 114% of the Total Acreage(TA) of that of US.

and TA=PA+fallow
Hence TA(Soviet)=114/100[TA(US)]
[PA+fallow](Soviet)=114/100[PA+fallow](US)
0.68PA(US)+fallow(Soviet)=1.14PA(US)+1.14fallow(US)
fallow(Soviet)=0.46PA(US)+1.14fallow(US)
Hence, by this logic
fallow(Soviet)>fallow(US)

Please tell me where I am wrong and what could have been the proper method
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 03 Jun 2020, 05:02
suramya26 wrote:
bubidag wrote:
My advice for everyone here would be to imagine that we have the same acreage at the beginning.

Meaning if we compare 100 acreage from Soviet Union and USA we will get, 68% yield and 100% yield, respectively.

Now we can see that the American yield will be slightly diluted with the addition of fallow acreage, this indicated by having 114% Soviet yield and 100% American yield.

The next step would be to imagine what could cause the yield to get diluted:

In all honesty since it is stated that it is fallow (meaning that it yields nothing) we are able to assume that we will be having more fallow land added to US than to Soviet.

A math way of thinking about it is-->(original scenario 68(crop)/100(acreage) Soviet-------100/100US)-----(second scenario----->we imagine we add some increment to soviet that is so small that we can neglect it 68/100 SOVIET----100/167( meaning we add the additional acreage in amount of 67) US-->this yielding back about 114% Soviet of US



Hi, Thanks for the explanation.
I have once concern.

I understood the 1st part that if we compare 100 planted acreage(PA) from Soviet Union and USA we will get, 68% yield and 100% yield, respectively.
PA(Soviet)=0.68PA(US)
But in the 2nd part Soviet has 114% of the Total Acreage(TA) of that of US.

and TA=PA+fallow
Hence TA(Soviet)=114/100[TA(US)]
[PA+fallow](Soviet)=114/100[PA+fallow](US)
0.68PA(US)+fallow(Soviet)=1.14PA(US)+1.14fallow(US)
fallow(Soviet)=0.46PA(US)+1.14fallow(US)
Hence, by this logic
fallow(Soviet)>fallow(US)

Please tell me where I am wrong and what could have been the proper method


I have the same doubt about it. I think the question the better method to answer this is using elimination (B to E options don't talk about percentage but about total and this is not possible to infer from the argument. Because if we analyze the question I think is wrong.
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Re: United States and the Soviet Union in terms of crop yields [#permalink] New post 22 Jun 2020, 21:37
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It seems like the catch is YIELD - if the yield is more, then the fallow area will be less.
In the first look, it seems like A is incorrect. But, when we consider yield, it is correct.
Re: United States and the Soviet Union in terms of crop yields   [#permalink] 22 Jun 2020, 21:37
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