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In an effort to save energy and, thus, money, many people keep their

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In an effort to save energy and, thus, money, many people keep their  [#permalink]

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New post 24 Apr 2017, 02:43
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Question Stats:

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In an effort to save energy and, thus, money, many people keep their electric freezers halfempty at all times, using them to store prefrozen foods bought at a store and nothing else. Yet freezers that are half-empty usually consume more energy than they would if they were kept fully stocked.

Which of the following, if true, contributes most to an explanation for the apparent discrepancy described above?


A) A person who normally maintains a halfempty freezer would save a considerable amount of money by using a freezer that is half as large.

B) An electric freezer can operate efficiently only if chilled air is free to circulate within the freezing compartment.

C) A given volume of air in a freezer requires much more energy to be maintained at a temperature below freezing than does an identical volume of frozen food.

D) The door of a full freezer is likely to be opened more often, and for a longer period of time, than is the door of a halfempty freezer.

E) On average, it takes less energy to keep food frozen than it does to get it from room temperature to a frozen state.

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Re: In an effort to save energy and, thus, money, many people keep their  [#permalink]

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New post 24 Apr 2017, 03:45
Look for an option that supports the claim.

A. out of scope
B. opposing the claim
C. Supports the claim
D. opposing the claim
E. out of scope

Hence, C is the best choice.
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Re: In an effort to save energy and, thus, money, many people keep their  [#permalink]

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New post 06 Sep 2018, 10:12
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VyshakhR1995 wrote:
In an effort to save energy and, thus, money,
many people keep their electric freezers halfempty
at all times, using them to store
prefrozen foods bought at a store and nothing
else. Yet freezers that are half-empty usually
consume more energy than they would if they
were kept fully stocked.

Which of the following, if true, contributes
most to an explanation for the apparent
discrepancy described above?

A)A person who normally maintains a halfempty
freezer would save a considerable
amount of money by using a freezer that
is half as large.
B)An electric freezer can operate efficiently
only if chilled air is free to circulate
within the freezing compartment.
C)A given volume of air in a freezer requires
much more energy to be maintained at a
temperature below freezing than does
an identical volume of frozen food.
D) The door of a full freezer is likely to be
opened more often, and for a longer
period of time, than is the door of a halfempty
freezer.
E)On average, it takes less energy to keep
food frozen than it does to get it from
room temperature to a frozen state.


Hi nightblade354 :)

Please reformat the argument, question stem and options.

Thanks!
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Re: In an effort to save energy and, thus, money, many people keep their  [#permalink]

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New post 06 Sep 2018, 13:28
1
gmat1393 wrote:
VyshakhR1995 wrote:
In an effort to save energy and, thus, money,
many people keep their electric freezers halfempty
at all times, using them to store
prefrozen foods bought at a store and nothing
else. Yet freezers that are half-empty usually
consume more energy than they would if they
were kept fully stocked.

Which of the following, if true, contributes
most to an explanation for the apparent
discrepancy described above?

A)A person who normally maintains a halfempty
freezer would save a considerable
amount of money by using a freezer that
is half as large.
B)An electric freezer can operate efficiently
only if chilled air is free to circulate
within the freezing compartment.
C)A given volume of air in a freezer requires
much more energy to be maintained at a
temperature below freezing than does
an identical volume of frozen food.
D) The door of a full freezer is likely to be
opened more often, and for a longer
period of time, than is the door of a halfempty
freezer.
E)On average, it takes less energy to keep
food frozen than it does to get it from
room temperature to a frozen state.


Hi nightblade354 :)

Please reformat the argument, question stem and options.

Thanks!


All set!

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Re: In an effort to save energy and, thus, money, many people keep their  [#permalink]

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New post 06 Jul 2019, 08:58
VyshakhR1995 wrote:
In an effort to save energy and, thus, money, many people keep their electric freezers halfempty at all times, using them to store prefrozen foods bought at a store and nothing else. Yet freezers that are half-empty usually consume more energy than they would if they were kept fully stocked.

Which of the following, if true, contributes most to an explanation for the apparent discrepancy described above?


A) A person who normally maintains a halfempty freezer would save a considerable amount of money by using a freezer that is half as large.

B) An electric freezer can operate efficiently only if chilled air is free to circulate within the freezing compartment.

C) A given volume of air in a freezer requires much more energy to be maintained at a temperature below freezing than does an identical volume of frozen food.

D) The door of a full freezer is likely to be opened more often, and for a longer period of time, than is the door of a halfempty freezer.

E) On average, it takes less energy to keep food frozen than it does to get it from room temperature to a frozen state.


expl discr: to save kcal + $ "many" keep frz 1/2 empt… using only to store prefrz; yet, such strategy uses more kcal than full; how come? maybe 1/2 empty means that there is more space available, so everytime i open the frz more "cold" air would exit than if the frz was full, meaning that the frz would consume more kcal to stabilize a frzg temp.

(A) this doesnt exp y half empty uses more than full, irrelevant;
(B) this also widens the discrepancy, because the half empty has more free space vs full, and thus is operating efficiently, which could mean using less energy, but it is using more!
(D) this could potentially widen the discrepancy, irrelevant;
(E) this choice is irrelevant, because stem says "store prefrozen foods, nothing else";

Answer (C): yes, this is close to what we were thinking (but better); a full uses less energy to keep temp stable than a half empty, because volume of air needs reqs more energy than a full to maintain frzg temp.
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Re: In an effort to save energy and, thus, money, many people keep their   [#permalink] 06 Jul 2019, 08:58
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