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"Durability" is the measure of how long a certain appliance

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"Durability" is the measure of how long a certain appliance [#permalink] New post 24 Nov 2012, 04:02
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Question Stats:

55% (03:47) correct 44% (00:48) wrong based on 1 sessions
"Durability" is the measure of how long a certain appliance remains functional without breaking down. Sixty years
ago, average refrigerator durability was 15 years, whereas now refrigerators operate continuously for more than
40 years on average. Thus, at that time, people must have considered refrigerators to be nearing the end of their
operational life at an age that we now consider will leave many more working years.

Which of the following, if true, undermines the argument above?

A: Today, many more households own refrigerators than did households sixty years ago.
B: Most of the improvements in durability in the past sixty years have been achieved through cutting down on the
number of refrigerators that break down in the first year of ownership.
C: Many of the refrigerators that last an extremely long time today do so only because of engineering technology
that was not available sixty years ago.
D: The proportion of refrigerators that break down when they are between 35 years and 40 years old is significantly
smaller today than is the proportion of refrigerators that break down after 40 years.
E: More refrigerators sixty years ago received regular service than receive it today.
[Reveal] Spoiler: OA

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Re: "Durability" is the measure of how long a certain appliance [#permalink] New post 24 Nov 2012, 05:08
gmatbull wrote:
"Durability" is the measure of how long a certain appliance remains functional without breaking down. Sixty years
ago, average refrigerator durability was 15 years, whereas now refrigerators operate continuously for more than
40 years on average. Thus, at that time, people must have considered refrigerators to be nearing the end of their
operational life at an age that we now consider will leave many more working years.

Which of the following, if true, undermines the argument above?

A: Today, many more households own refrigerators than did households sixty years ago.
B: Most of the improvements in durability in the past sixty years have been achieved through cutting down on the
number of refrigerators that break down in the first year of ownership.
C: Many of the refrigerators that last an extremely long time today do so only because of engineering technology
that was not available sixty years ago.
D: The proportion of refrigerators that break down when they are between 35 years and 40 years old is significantly
smaller today than is the proportion of refrigerators that break down after 40 years.
E: More refrigerators sixty years ago received regular service than receive it today.



Y not C here???

C seems to be more Weaken the argument for me...
If there was good tech 60 yrs ago they would have had better life time for refrigerators....

Isn't this undermining argument???
Please explain
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Re: "Durability" is the measure of how long a certain appliance [#permalink] New post 24 Nov 2012, 06:43
shanmugamgsn wrote:
gmatbull wrote:
"Durability" is the measure of how long a certain appliance remains functional without breaking down. Sixty years
ago, average refrigerator durability was 15 years, whereas now refrigerators operate continuously for more than
40 years on average. Thus, at that time, people must have considered refrigerators to be nearing the end of their
operational life at an age that we now consider will leave many more working years.

Which of the following, if true, undermines the argument above?

A: Today, many more households own refrigerators than did households sixty years ago.
B: Most of the improvements in durability in the past sixty years have been achieved through cutting down on the
number of refrigerators that break down in the first year of ownership.
C: Many of the refrigerators that last an extremely long time today do so only because of engineering technology
that was not available sixty years ago.
D: The proportion of refrigerators that break down when they are between 35 years and 40 years old is significantly
smaller today than is the proportion of refrigerators that break down after 40 years.
E: More refrigerators sixty years ago received regular service than receive it today.



Y not C here???

C seems to be more Weaken the argument for me...
If there was good tech 60 yrs ago they would have had better life time for refrigerators....

Isn't this undermining argument???
Please explain



Hi there

og-critical-reasoning-1-i-disagree-107699.html
refer to the link similar question....the above question is an interpretation of the question 1 CR section of OG 12 dealing with life expectancy....
hope that helps
Re: "Durability" is the measure of how long a certain appliance   [#permalink] 24 Nov 2012, 06:43
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