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20 Jul 2005, 11:14
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An advertisement designed to convince readers of the great durability of automobiles manufactured by the Deluxe Motor Car Company cites as evidence the fact that over half of all automobiles built by the company since 1970 are still on the road today, compared to no more than a third for any other manufacturers.

Which one of the following, if true, most strongly supports the advertisement's argument?

(A) After taking inflation into account, a new Deluxe automobile costs only slightly more than a new model did in 1970.

(B) The number of automobiles built by Deluxe each year has not increased sharply since 1970.

(C) Owners of Deluxe automobiles typically keep their cars well-maintained.

(D) Since 1970, Deluxe has made fewer changes in the automobiles it manufactures than other car companies have made in their automobiles.

(E) Deluxe automobiles have been selling at relatively stable prices in recent years.
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20 Jul 2005, 11:22
That is easy one - (B)
I feel I should't explain why.
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20 Jul 2005, 13:44
D is the best

(A) After taking inflation into account, a new Deluxe automobile costs only slightly more than a new model did in 1970.
- NOPE. Out of scope, we are not talking about inflation here

(B) The number of automobiles built by Deluxe each year has not increased sharply since 1970.
- Neither strengthens nor weakens the argument.

(C) Owners of Deluxe automobiles typically keep their cars well-maintained.
- May actually serve to weaken the argument. If owners maintain their cars well, then the fact that the car has lasted so long, might be attributed to the owner's diligence

(D) Since 1970, Deluxe has made fewer changes in the automobiles it manufactures than other car companies have made in their automobiles.
- MOST LIKELY. If the car manufacturer, hasn't made any changes to the automobile, then it means, that the design is stable. Besides, with most of the original design still intact, it will mean that the new car, will be as durable as the original cars.

(E) Deluxe automobiles have been selling at relatively stable prices in recent years.
- Out of scope. The ad does not concern itself with stable prices.
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20 Jul 2005, 15:30
" evidence the fact that over half of all automobiles built by the company since 1970 are still on the road today"

So it is B....

D doesnt look convincingly supporting ...
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21 Jul 2005, 05:58
OA is B.
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21 Jul 2005, 06:25
Christoph, himalaya, darth, can you guys shed some light on this argument.

keirin79, Can you please post the OE (Original/official explaination)?

B, that does not make sense.

What does B tell about the durablility of cars?

1970 till today - 1/2 built by DMC are still on road and 1/3 from any other.
DMC sales have not jumped, so the 1/2 could be less than 1/3 built by other if other sales have gone up.
Infact B weekens the argument.

D says, They have not made considerable changes in the car in tha past because car has been the right the first time and that's why it is durable.
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21 Jul 2005, 07:25
riteshgupta1 wrote:
Christoph, himalaya, darth, can you guys shed some light on this argument.

keirin79, Can you please post the OE (Original/official explaination)?

B, that does not make sense.

What does B tell about the durablility of cars?

1970 till today - 1/2 built by DMC are still on road and 1/3 from any other.
DMC sales have not jumped, so the 1/2 could be less than 1/3 built by other if other sales have gone up.
Infact B weekens the argument.

D says, They have not made considerable changes in the car in tha past because car has been the right the first time and that's why it is durable.

If they have increased the production of their cars since 1970, that will mean that there are more "newer" cars (those produced recently) than the older ones. Also, if they were producing far more now than before, and when we don't know whether the competitor's production has increased, it is not fair to use a percentage like figure to compare two things. Imagine, for example, Honda made 100,000 cars a year from 1970 to 1990, and they have doubled their production since 1990 to now. If they claim that their cars are more durable than those of its competitor (e.g. Toyota) since half the cars produced since 1970 (be careful, this does not mean half the cars produced IN 1970) are still on the road, whereas only 1/3 of the competitor's are so, this comparison is vulnerable to much criticism.
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21 Jul 2005, 08:14
tricky and a good question.
but now the picture is all clear....
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21 Jul 2005, 08:44
Yes Keirin, you are right. I misread "since 1970" as "in 1970". Hence my conclusion. It makes perfect sense now, and I stand corrected.
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21 Jul 2005, 10:47
Yes Keirin, you are right. I misread "since 1970" as "in 1970". Hence my conclusion. It makes perfect sense now, and I stand corrected.

Hello, Darth

How does "making fewer changes in the automobiles" translate into being more "durable" ? In fact, the question never specifies what kind of those "changes" are, these could range from subtle design changes, face liftups, to major engine fixes, or mechanical problems (which I think you assumed). Therefore, D sounds tempting, but D does not support their claim.
21 Jul 2005, 10:47
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