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In Patton City, days are categorized as having heavy

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Intern
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Joined: 19 Aug 2012
Posts: 18
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In Patton City, days are categorized as having heavy [#permalink] New post 18 Dec 2012, 01:52
00:00
A
B
C
D
E

Difficulty:

  55% (medium)

Question Stats:

32% (03:05) correct 67% (01:56) wrong based on 55 sessions
In Patton City, days are categorized as having heavy rainfall (more than two inches), moderate rainfall (more than
one inch, but no more than two inches), light rainfall (at least a trace, but no more than one inch), or no rainfall.
In 1990, there were fewer days with light rainfall than in 1910 and fewer with moderate rainfall, yet total rainfall
for the year was 20 percent higher in 1990 than in 1910. If the statements above are true, then it is also
possible that in Patton City
A. the number of days with heavy rainfall was lower in 1990 than in 1910
B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910
C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910
D. the total number of inches of rain that fell on days with moderate rainfall in 1990 was more than twice what it
had been in 1910
E. the average amount of rainfall per month was lower in 1990 than in 1910

I cant seem to understand why the answer is what it is.. i have the reasoning available with me will post this soon..
[Reveal] Spoiler: OA
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Senior Manager
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Re: Flaw question - very confusing! [#permalink] New post 18 Dec 2012, 02:27
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arjun206 wrote:
In Patton City, days are categorized as having heavy rainfall (more than two inches), moderate rainfall (more than
one inch, but no more than two inches), light rainfall (at least a trace, but no more than one inch), or no rainfall.
In 1990, there were fewer days with light rainfall than in 1910 and fewer with moderate rainfall, yet total rainfall
for the year was 20 percent higher in 1990 than in 1910. If the statements above are true, then it is also
possible that in Patton City
A. the number of days with heavy rainfall was lower in 1990 than in 1910
B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910
C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910
D. the total number of inches of rain that fell on days with moderate rainfall in 1990 was more than twice what it
had been in 1910
E. the average amount of rainfall per month was lower in 1990 than in 1910

I cant seem to understand why the answer is what it is.. i have the reasoning available with me will post this soon..



Coming to choice A, Can the number of days of heavy rainfall be lower in 1990 than in 1910? It is possible because even if the number of days of heavy rainfall was lower, the rainfall could have been lot more heavier on those days making the total rainfall for the year more. Let us keep this choice.

Choice B and C are not possible because they directly contradict the information given that there are fewer number of days of both light and moderate rainfall in 1990 than in 1910.

Choice D contradicts the definition of moderate rainfall as moderate rainfall on any two days by definition has to vary by less than twice.

Choice E is also not possible because if total rainfall for a year was higher than that of another year, then the average rainfall per month for that year also has to be higher than that of the other year.

So Choice A should be the answer.
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Re: Flaw question - very confusing!   [#permalink] 18 Dec 2012, 02:27
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