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# In the past the country of Siduria has relied heavily on

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In the past the country of Siduria has relied heavily on  [#permalink]

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08 Dec 2009, 10:27
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78% (01:43) correct 22% (02:03) wrong based on 786 sessions

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In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Which of the following is an assumption on which the argument depends?

A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production.
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
D. Buildings cannot be heated by solar energy rather than by oil or natural gas.
E. All new homes that are being built will have natural-gas-burning heating systems.
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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08 Dec 2009, 11:35
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IMO A

Rest all options seems irrelevent..

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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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08 Dec 2009, 11:46
1
In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Which of the following is an assumption on which the argument depends?

A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production. The assumption is that Consumtpion = Production. A is the best answer
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria. So there could be reliance on oil in this case.
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria. -
D. Buildings cannot be heated by solar energy rather than by oil or natural gas. - Out of Scope/Irrelevant
E. All new homes that are being built will have natural-gas-burning heating systems. - Irrelevant.

P1 - Seduria relies on imp oil
P2 - convert heating system from oil to NG
P3 - More NG produced than it burns (surplus) and oil prod increasing steady pace
C - Siduria's reliance on fuel should decline
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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08 Dec 2009, 13:50

If the rate of fuel consumption is greater than fuel production, then Siduria would have to rely on importing fuel!
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20 Feb 2010, 23:03
A says the 'rate', not the actual quantity produced.
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09 Apr 2010, 18:06
clearly A, everything else get's crossed off by POE

The wierd thing about A is that it is slightly stated in the premise, which is unlikely for an assumption question.
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10 Apr 2010, 01:19
A. The rest is just irrelevant.
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07 Jun 2012, 03:52
Cant be a 700 level prob. May be a 600 level.
IMO A
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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07 Jun 2012, 07:38
bsv180985 wrote:
In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Which of the following is an assumption on which the argument depends?

A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production.
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
D. Buildings cannot be heated by solar energy rather than by oil or natural gas.
E. All new homes that are being built will have natural-gas-burning heating systems.

A - correct as here it is assumed that the rate of fuel consumption is not rising more quickly as compared to rate of fuel production.
B - somehow it is stated in the stimulus but which fuel production can't be decided or assumed.
C - oil is also mentioned in the stimulus so this has to be incorrect.
D - only about buildings? incorrect
E - only about new homes? to specific - incorrect

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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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08 Jun 2012, 02:53
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1
A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production. - Some day in near future, the gap between consumption and production of fuel will be zero and the necessity of oil import will not be necessary for Siduria. - Correct
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria. - If this is the case, it still wont be enough to explain the usage of oil in near future and how the country would cope with it - Incorrect
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria. - Out of scope - Incorrect
D. Buildings cannot be heated by solar energy rather than by oil or natural gas. - Out of scope - Incorrect
E. All new homes that are being built will have natural-gas-burning heating systems. - If we only talk about new homes, what about the old home that still use oil for heating purposes. Does not give correct idea on the consumption pattern - Incorrect
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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11 Jun 2012, 05:52
Thanks for the explanation.. good question
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16 Jun 2012, 02:08
only A sees relevant all other can be easily eliminated
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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17 Mar 2014, 15:34
In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Which of the following is an assumption on which the argument depends?

A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production. the statement explains that production is greater that consumption. This is a valid assumption for decline of fuel import
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.- argument is about total fuel production
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.- nothing to do with replacement
D. Buildings cannot be heated by solar energy rather than by oil or natural gas.- nothing to do with solar energy
E. All new homes that are being built will have natural-gas-burning heating systems. -irrelevant
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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15 May 2014, 18:58
bsv180985 wrote:
In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Which of the following is an assumption on which the argument depends?

A. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production.
B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.
C. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
D. Buildings cannot be heated by solar energy rather than by oil or natural gas.
E. All new homes that are being built will have natural-gas-burning heating systems.

Hey guys,

Can you help me understand why C is not correct?

To me, the statement seems to conclude that because demand of natural gas (which can be produced in Siduria) is increasing, export of oil (which is mainly from export) will decline.

Conclusion: Reliance on foreign sources for Siduria will decline
Premise: Siduria's demand in natural gas is increasing
Premise: Siduria makes a lot of natural gas

If, for example, the demand of alternative energy, such as bioenergy that might not be able to be produced in Siduria, significantly increases in Siduria, then Siduria will not lower its reliance of foreign source. To me, C is also a pretty solid assumption the author has. I totally agree A is also assumed, but author seems to assume C as well.
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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19 May 2014, 02:09
For me too A seems more relevant than other options.
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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19 May 2014, 04:50
Quote:
Hey guys,

Can you help me understand why C is not correct?

Hi Cssmarimo

I liked that you've clearly stated the conclusion & premises. You've also tried to apply negation which is an important tool for assumption question. However, I somehow feel that you should give this argument a second read. There are some points which you seem to have missed. I'm sure a re-read would surely help!

Quote:
To me, the statement seems to conclude that because demand of natural gas (which can be produced in Siduria) is increasing, export of oil (which is mainly from export) will decline

We know that the production of natural gas each year exceeds its demand. I couldn't understand how you've related demand of natural gas with export of oil. Could you please elaborate on this? The argument looks for an option that supports the conclusion that Siduria's reliance on foreign sources for fuel will decline, which means Siduria's import of fuel would decline.

Quote:
Conclusion: Reliance on foreign sources for Siduria will decline
Premise: Siduria's demand in natural gas is increasing
Premise: Siduria makes a lot of natural gas

You seem to have missed the conditional structure of the conclusion and that might have led to the fundamental gap in your understanding of this question.

Conclusion: Note the conclusion presents a condition. If X, then Y.
If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.

Premises:
1) Implementation of a program to convert heating systems from oil to natural gas.
2) Production of natural gas is more than its use each year
3) Oil production in Sidurian oil fields is increasing at a steady pace.

As the conclusion depends on the continuation of trends in fuel production and usage, first we need to understand these trends.

Natural gas: Production of natural gas > its use

As the requirement of natural gas is less than its production, the continuation of this trend is likely to reduce the reliance on foreign sources for natural gas.

As for oil, we know that oil production is increasing at a steady pace; however, unlike the requirement of natural gas, the requirement of oil is not known to us.

If the rate of increase of requirement of oil exceeds or is same as the rate of increase of production of oil, it’s unlikely that Siduria's reliance on foreign sources for fuel will decline soon.

Thus the argument underlies the assumption that

The rate of increase of requirement of oil is lower than the rate of increase of production of oil.

Quote:
If, for example, the demand of alternative energy, such as bioenergy that might not be able to be produced in Siduria, significantly increases in Siduria, then Siduria will not lower its reliance of foreign source. To me, C is also a pretty solid assumption the author has. I totally agree A is also assumed, but author seems to assume C as well.

If we negate option C, we get:

At least one fuel other than natural gas is expected to be used as a replacement for oil in Siduria.

If I take your example, it means that bioenergy is expected to be used as a replacement of oil. This implies that requirement of oil may decline. Thus, the conclusion doesn't fall apart.

Note: we cannot add information about demand and production of bioenergy. We need to observe the impact of the option in its given form.

Hope this helps!
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09 Aug 2016, 06:40
egmat : Request your help on this.

I want to understand why B is not a correct option. Let me state my method of reasoning here :

If we negate the statement B, it states that :
Domestic production of natural gas is rising slower than its domestic production of oil.

Now, since the all heating systems will be converted from oil to natural gas, the demand will increase for natural gas and demand for oil will decrease. If the production of natural gas doesn't keep up with the demand, Siduria would need to import more oil. The excess production of oil will not help as its demand will reduce.

So, this definitely destroys the conclusion.

Can you help me understand the flaw of this reasoning?
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Re: In the past the country of Siduria has relied heavily on  [#permalink]

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27 Oct 2017, 03:26
theincredible wrote:
egmat : Request your help on this.

I want to understand why B is not a correct option. Let me state my method of reasoning here :

If we negate the statement B, it states that :
Domestic production of natural gas is rising slower than its domestic production of oil.

Now, since the all heating systems will be converted from oil to natural gas, the demand will increase for natural gas and demand for oil will decrease. If the production of natural gas doesn't keep up with the demand, Siduria would need to import more oil. The excess production of oil will not help as its demand will reduce.

So, this definitely destroys the conclusion.

Can you help me understand the flaw of this reasoning?

Hi there,

B. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria. Irrelevant as is already stated in the form of the premise,
Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace.

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Re: In the past the country of Siduria has relied heavily on   [#permalink] 19 Jan 2019, 06:23
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