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The restaurant business wastes more energy than any other

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Re: The restaurant business wastes more energy than any other [#permalink] New post 30 Apr 2013, 11:32
VeritasPrepRon wrote:
For E, since we know the restaurant industry spends $10B on energy every year, if we could save 5,000,000,001$ we know this would be the greatest amount it could possibly save, i.e. 50%+1. If a sector is over 50%, it must necessarily represent the largest possible savings. Thus E must be true.


What if the industry spends $100B on lawn mowers each year? Of which 90% is squandered due to lack of lawns?

What is the difference between the logic in above contest and in this reasoning:
VeritasPrepRon wrote:
For D, could you imagine a scenario in which 80% of the $10B is squandered by the use of inefficient equipment and say 5% is squandered on something else, say paying environmental fees or licensing for your equipment? Sure, why not? This money could still be squandered even if it wasn't spent on inefficient equipment. Tempting, but this answer choice doesn't HAVE to be true.


I could manipulate:
Quote:
For E, could you imagine a scenario in which 80% of the $100B is squandered by the use of inefficient lawn mowers and say 90% could be saved? Sure, why not? This money could also be saved and would amount much greater than potential energy savings. Tempting, but this answer choice doesn't HAVE to be true.


What am I missing?
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Re: The restaurant business wastes more energy than any other [#permalink] New post 30 Apr 2013, 11:44
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Hi HumptyDumpty, the entire sentence is important, and answer choice E says "The replacement of inefficient equipment represents the largest potential source of energy savings for the restaurant industry."

They could save $100B on lawns, but that doesn't have anything to do with a source of energy savings. Since the question has given us 80% of the amount of energy spent on the budget, this must necessarily be where the majority of the savings can come from.

Beware logic like "D is more restrictive than E", inference questions must be true, 100% of the time. If you find one scenario that doesn't work for D and 2 that don't work for E, that doesn't mean D is better. If you can find faults in two different choices, you may need to try looking at them the right way because there's a missing piece of information or an extra assumption that is erroneous.

Hope this helps!
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Re: CR: Restaurant Business [#permalink] New post 23 Sep 2013, 10:54
sanjay_gmat wrote:
pmenon wrote:
The restaurant business wastes more energy than any other industry in the United States. Nearly 80 percent of the $10 billion spent on energy by the restaurant industry each year is squandered by the use of inefficient equipment. At the same time, approximately 70 percent of restaurants in the United States are small businesses that are usually too cash poor to invest in energy-efficient technology.

Which of the following statements draws the most reliable conclusion from the information above

A. The availability of energy-efficient equipment will reduce the energy costs of the restaurant industry by approximately 30 percent.

B. No industry in the United States spends greater than $10 billion each year on energy.

C. By using energy-efficient technology, a small restaurant will reduce its expenses by a greater percentage than will a large restaurant.

D. Approximately $2 billion of the amount spent on energy each year by the restaurant industry is not squandered.

E. The replacement of inefficient equipment represents the largest potential source of energy savings for the restaurant industry.


I think D is more reliable than E.



The question said that 80% (or 8 bn) is squandered "by inefficient equipment". This doesn't mean that the other 20% (or$ 2 bn) is NOT squandered. it could have been squandered by something else, other than inefficient equipment.
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Re: The restaurant business wastes more energy than any other [#permalink] New post 23 Sep 2013, 21:03
pmenon wrote:
The restaurant business wastes more energy than any other industry in the United States. Nearly 80 percent of the $10 billion spent on energy by the restaurant industry each year is squandered by the use of inefficient equipment. At the same time, approximately 70 percent of restaurants in the United States are small businesses that are usually too cash poor to invest in energy-efficient technology.

Which of the following statements draws the most reliable conclusion from the information above

(A) The availability of energy-efficient equipment will reduce the energy costs of the restaurant industry by approximately 30 percent.
(B) No industry in the United States spends greater than $10 billion each year on energy.
(C) By using energy-efficient technology, a small restaurant will reduce its expenses by a greater percentage than will a large restaurant.
(D) Approximately $2 billion of the amount spent on energy each year by the restaurant industry is not squandered.
(E) The replacement of inefficient equipment represents the largest potential source of energy savings for the restaurant industry.


As with any CR question, listing down the premises:

i) The restaurant business wastes more energy than any other industry in the US.
ii) Majority of amount spent on energy is squandered due to inefficient equipment use.
iii) As such, Majority of restaurants being poor can't invest in energy efficient technology.

Options and POE:

(A) - No premises support this conclusion - eliminated.
(B) - The premises state that the restaurant wastes[ more energy - eliminated.
(C) - The premises do not support this conclusion - eliminated.
(D) - Too obvious a conclusion; but does not take in to account other premise - eliminated.
(E) - Yes. All 3 premises can lead to this conclusion reasonably. - IMO E.
Pretty straightforward question, IMO. Any thoughts - do reply; would love to discuss! :)
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Re: CR: Restaurant Business [#permalink] New post 28 Sep 2013, 07:46
dkverma wrote:
I went for D.


E,

Why D, the entire 10 billion is squandered, its just that 80 percent of it stems from inefficient usage of energy. So most of the saving can be achieved by investing in energy efficient appliances for the restaurant industry.

Hence E.
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Re: CR: Restaurant Business   [#permalink] 28 Sep 2013, 07:46
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