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A chemical company developed a new fuel additive that

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A chemical company developed a new fuel additive that [#permalink] New post 09 Aug 2013, 20:02
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A chemical company developed a new fuel additive that promised to increase automobiles’ fuel efficiency by increasing the octane level of gasoline to which it is added. Some trucking companies that purchased the additive did reduce fuel expenses somewhat, but because the fuel additive is very expensive, the amount of money they saved on fuel was comparable to the amount they spent on the additive. Therefore, using the new fuel additive will not help to reduce fuel expenses.

Which of the following, if true, would best help to evaluate the argument above?
(A)Whether the new fuel additive was tried out only by trucking companies.
(B)Whether trucking companies previously had tried out other fuel additives.
(C)Whether the new fuel additive can increase an automobile’s maximum speed.
(D)Whether drivers who tried out the new fuel additive added more of it than it was necessary.
(E)Whether trucking companies experienced losses because of high fuel prices.
[Reveal] Spoiler: OA

Last edited by guerrero25 on 09 Aug 2013, 21:27, edited 1 time in total.
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Re: A chemical company developed a new fuel additive that [#permalink] New post 09 Aug 2013, 20:32
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guerrero25 wrote:
A chemical company developed a new fuel additive that promised to increase automobiles’ fuel efficiency by increasing the octane level of gasoline to which it is added. Some trucking companies that purchased the additive did reduce fuel expenses somewhat, but because the fuel additive is very expensive, the amount of money they saved on fuel was comparable to the amount they spent on the additive. Therefore, using the new fuel additive will not help to reduce fuel expenses.

Which of the following, if true, would best help to evaluate the argument above?
(A)Whether the new fuel additive was tried out only by trucking companies.
(B)Whether trucking companies previously had tried out other fuel additives.
(C)Whether the new fuel additive can increase an automobile’s maximum speed.
(D)Whether drivers who tried out the new fuel additive added more of it than it was necessary.
(E)Whether trucking companies experienced losses because of high fuel prices.

OA to follow



A) Since the stem mentions the additive is for automobiles, the use in trucks may or may not make a difference in it's effectiveness. Still this does not come across as the strongest answer.
B) Irrelevant, does not apply to using this particular fuel additive.
C) The additive is designed to increase mileage, not speed. Increasing speed could lower gas mileage. But nothing about this statement says that the drivers were driving faster than normal.
D) By not using the product correctly, you can not properly evaluate the increase/decrease/no change in gas mileage, and thus the cost to use the product. Correct answer.
E) This would give the trucking companies a reason to want to try the product. However, this has no bearing on the cost or cost savings, of using this product.
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Re: A chemical company developed a new fuel additive that [#permalink] New post 09 Aug 2013, 21:19
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guerrero25 wrote:
A chemical company developed a new fuel additive that promised to increase automobiles’ fuel efficiency by increasing the octane level of gasoline to which it is added. Some trucking companies that purchased the additive did reduce fuel expenses somewhat, but because the fuel additive is very expensive, the amount of money they saved on fuel was comparable to the amount they spent on the additive. Therefore, using the new fuel additive will not help to reduce fuel expenses.

Which of the following, if true, would best help to evaluate the argument above?
(A)Whether the new fuel additive was tried out only by trucking companies.
(B)Whether trucking companies previously had tried out other fuel additives.
(C)Whether the new fuel additive can increase an automobile’s maximum speed.
(D)Whether drivers who tried out the new fuel additive added more of it than it was necessary.
(E)Whether trucking companies experienced losses because of high fuel prices.

OA to follow


yes it is D

(D)Whether drivers who tried out the new fuel additive added more of it than it was necessary.
VARIANCE TEST:
YES, drivers who tried out the new fuel additive added more of it than it was necessary.==>THIS CLEARLY DESTROYS THE CONCLUSION .
NO,drivers who tried out the new fuel additive HAVE NOT added more of it than it was necessary.==>SUPPORTS.
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Re: A chemical company developed a new fuel additive that [#permalink] New post 04 Jun 2015, 02:03
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: A chemical company developed a new fuel additive that [#permalink] New post 04 Jun 2015, 02:09
Logically both A and D makes sense
However, D is the stronger contender for the answer
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Re: A chemical company developed a new fuel additive that   [#permalink] 04 Jun 2015, 02:09
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