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Most household appliances use electricity only when in use. Many micro

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Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 28 Sep 2007, 04:04
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Difficulty:

  15% (low)

Question Stats:

78% (01:13) correct 22% (07:56) wrong based on 960 sessions

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Most household appliances use electricity only when in use. Many microwave ovens, however, have built-in clocks and so use some electricity even when they are not in Use. The clocks each consume about 45 kilowatt-hours per year. Therefore, households whose microwave oven has no built-in clock use 45 kilowatt-hours per year less, on average, than do comparable households microwave oven is otherwise similar but has a built-in clock.

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

(A) Households that do not have a microwave oven use less energy per year, on average, than do households that have a microwave oven.

(B) Microwave ovens with a built-in clock do not generally cost more to buy than microwave ovens without a built-in clock.

(C) All households that have a microwave oven also have either a gas oven or a conventional electric oven.

(D) Households whose microwave oven does not have a built-in clock are no more likely to have a separate electric clock plugged in than households whose microwave oven has one.

(E) There are more households that have a microwave oven with a built-in clock than there are households that have a microwave oven without a built-in clock.

[Reveal] Spoiler:
(A) - reiterates the stimulus
(B) - information is irrelevant to the discussion
(C) - additional information to the stimulus - not helpful in addressing the issue at hand
(D) - stating that if an oven don't have a clock will not install one so - these ovens most likely to be less expensive than the oven's with the build in clocks. - tempting answer
(E) - Additional information to the stimulus - Not quite relevant.
I don't have the OA but I'm going with D. Wait for your responses. Gracias.
[Reveal] Spoiler: OA

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Last edited by hazelnut on 21 Aug 2017, 05:43, edited 3 times in total.
Moved the comments/OA under spoiler

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 28 Sep 2007, 06:11
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alimad wrote:
Most household appliances use electricity only when in use. Many microwave ovens,
However, have built-in clocks and so use some electricity even when they are not in
Use. The clocks each consume about 45 kilowatt-hours per year. Therefore, house Holds whose microwave oven has no built-in clock use 45 kilowatt-hours per year Less. On average, than do comparable households microwave oven is other- Wise similar but has a built-in clock.

Which of the following is an assumption on which the argument depends?
A. Households that do not have a microwave oven use less energy per year, on
average, than do households that have a microwave oven.
B. Microwave ovens with a built-in clock do not generally cost more to buy than
microwave ovens without a built-in clock.
C. All households that have a microwave oven also have either a gas oven or a
Conventional electric oven.
D. Households whose microwave oven does not have a built-in clock are no more likely to have a separate electric clock plugged in than households whose microwave oven has one.
E. There are more households that have a microwave oven with a built-in clock than there are households that have a microwave oven without a built-in clock.


(A) - reiterates the stimulus
(B) - information is irrelevant to the discussion
(C) - additional information to the stimulus - not helpful in addressing the issue at hand
(D) - stating that if an oven don't have a clock will not install one so - these ovens most likely to be less expensive than the oven's with the build in clocks. - tempting answer
(E) - Additional information to the stimulus - Not quite relevant.
I don't have the OA but I'm going with D. Wait for your responses. Gracias.


D no doubt.

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 28 Sep 2007, 10:54
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alimad wrote:
Most household appliances use electricity only when in use. Many microwave ovens,
However, have built-in clocks and so use some electricity even when they are not in
Use. The clocks each consume about 45 kilowatt-hours per year. Therefore, house Holds whose microwave oven has no built-in clock use 45 kilowatt-hours per year Less. On average, than do comparable households microwave oven is other- Wise similar but has a built-in clock.

Which of the following is an assumption on which the argument depends?
A. Households that do not have a microwave oven use less energy per year, on
average, than do households that have a microwave oven.
B. Microwave ovens with a built-in clock do not generally cost more to buy than
microwave ovens without a built-in clock.
C. All households that have a microwave oven also have either a gas oven or a
Conventional electric oven.
D. Households whose microwave oven does not have a built-in clock are no more likely to have a separate electric clock plugged in than households whose microwave oven has one.
E. There are more households that have a microwave oven with a built-in clock than there are households that have a microwave oven without a built-in clock.


(A) - reiterates the stimulus
(B) - information is irrelevant to the discussion
(C) - additional information to the stimulus - not helpful in addressing the issue at hand
(D) - stating that if an oven don't have a clock will not install one so - these ovens most likely to be less expensive than the oven's with the build in clocks. - tempting answer
(E) - Additional information to the stimulus - Not quite relevant.
I don't have the OA but I'm going with D. Wait for your responses. Gracias.



I go for D.

A: irrelevant
B: irrelevant we aren't concerned about actual costs of the microwave.
C: irrelevant we aren't concerned about gas stoves or other appliances.
We wanna know why the microwave will use less power.
E: maybe, but this doesn't help the conclusion explain that these non-built in clock microwaves will use less power.

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 15 Feb 2014, 20:45
Good question, Answer should be D.

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 27 Sep 2015, 09:25
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A. Households that do not have a microwave oven use less energy per year, on average, than do households that have a microwave oven.--- it can't be true ! as it is comparing oven with non-oven.
B. Microwave ovens with a built-in clock do not generally cost more to buy than microwav
e ovens without a built-in clock.--- nothing could support this.
C. All households that have a microwave oven also have either a gas oven or a Conventional electric oven.---out of scope.
D. Households whose microwave oven does not have a built-in clock are no more likely to have a separate electric clock plugged in than households whose microwave oven has one.--- i m giving this a chance cause others can't be an ans
E. There are more households that have a microwave oven with a built-in clock than there are households that have a microwave oven without a built-in clock.--- out of scope

D it is .
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Thanks!
Do give some kudos.

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 23 Oct 2016, 04:20
Choosen D because other options are irrelevent or clearly wrong.If anyone can explain?

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 17 Dec 2016, 17:17
Wow. This is a case of a problem using the "wordiest" language possible to describe simple concepts. In any case, the answer is definitely D.

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 13 Aug 2017, 07:50
No option other than D makes sense in this case.
What is the OA?

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Re: Most household appliances use electricity only when in use. Many micro [#permalink]

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New post 20 Aug 2017, 22:27
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Option A is although a restatement mentioned in the argument, when negated it shatters the conclusion.
Does this mean that the option that shatters the conclusion when negated does not work always to get to the right answer for Assumption questions?

Thanks in advance!

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Re: Most household appliances use electricity only when in use. Many micro   [#permalink] 20 Aug 2017, 22:27
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