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# In the year following an eight-cent increase in the federal

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Manager
Joined: 02 Aug 2006
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Location: Taipei
In the year following an eight-cent increase in the federal [#permalink]

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27 Aug 2006, 04:24
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In the year following an eight-cent increase in the federal tax on a pack of cigarettes,sales of cigarettes fell ten percent. In contrast, in the year prior to the tax increase, sales had fallen one percent. The volume of cigarette sales is therefore strongly related to the
after-tax price of a pack of cigarettes.

The argument above requires which of following assumptions?

A. During the year following the tax increase, the pretax price of a pack of cigarettes did not increase by as much as it had during the year prior to the tax increase.

B. The one percent fall in cigarette sales in the year prior to tax increase was due to a smaller tax increase.

C. The pretax price of a pack of cigarettes gradually decreased throughout the year before and the year after the tax increase.

D. For the year following the tax increase, the pretax price of a pack of cigarettes was not eight or more cents lower than it had been the previous year.

E. As the after-tax price of a pack of cigarettes rises, the pretax price also rises.

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Current Student
Joined: 29 Jan 2005
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27 Aug 2006, 04:39
Only (D) fails the negation test.

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Director
Joined: 23 Jun 2005
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GMAT 1: 740 Q48 V42

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27 Aug 2006, 06:02
Go with GMATT73 and vote for D.
If pre-tax price was 8 or more cents lower than previous year, net increase in post-tax price equals zero.

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27 Aug 2006, 06:02
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# In the year following an eight-cent increase in the federal

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