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In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 12:55

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A

B

C

D

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23% (01:48) correct
77% (02:11) wrong based on 3894 sessions

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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 191

Re: In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 13:18

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C by POE

A. the number of days with heavy rainfall was lower in 1990 than in 1910 -> cannot say..

B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910 -> cannot say...

C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 -> sounds good

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 -> may or may not be

E. the average amount of rainfall per month was lower in 1990 than in 1910 -> cannot be
_________________

Re: In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 13:34

how is 'c' possible

The stem says there are fewer days of light and moderate rain in 1990 option C directly contradicts what is written in the stem cos it essentially says that 1990 got more number of light and moderate rain days , which is false

IMO the best choice is D ....

lets say 1990 got fewer no of days for moderate + light rain but on days when it got it , the rains were closest to 2 inches whereas in 1910 u got more number of such days , but its possible each day u got it closer to the lower end of the slab which is around one

Re: In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 19:34

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I think A is a possible answer as it says:

"the number of days with heavy rainfall was lower in 1990 than in 1910" however the amount of rain in 1990 can be more on these days than in 1910. Since heavy rainfall is defined as anything greater than 2 inches.

Re: In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 20:58

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D for me.

quantum 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. doesn't help B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910 Argument only mentions 4 categories of rainfall;some rainfall is not defined. some rainfall can be no rainfall too. C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 Argument only mentions 4 categories of rainfall;some rainfall is not defined. some rainfall can be no rainfall too. 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 This says inches of rainfall was higher; helps E. the average amount of rainfall per month was lower in 1990 than in 1910 doesn't help

Re: In Patton City, days are categorized as having heavy [#permalink]

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14 Jun 2008, 23:26

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quantum 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 definitely possible. Consider in 1990 one day about 1000000000 inches fell. (just kidding, but u get the point) B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910 can't be true because we know moderate and light says were fewer in 1990 than in 1910

C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 same problem as in B

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 not mathematically possible. We can only get twice the amount of rainfall if the number of moderate days were the same and all the moderate days in 1990 have 2 inches of rain and all the moderate rain days have 1 inch of rain in 1910

E. the average amount of rainfall per month was lower in 1990 than in 1910 not possible (unless there were more months in 1990 )since we are told total in 1990 was hight really tuff one

Re: In Patton City, days are categorized as having heavy [#permalink]

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23 Jun 2010, 05:48

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I will go with A.

(A) the number of days with heavy rainfall was lower in 1990 than in 1910 >>>> The author says lower light and moderate rainfall, YET only 20% more rainfall in 1990. This means there was some other factor that led to lower total rainfall. Above argument solves this !

(B) the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910 >>> There is no such rainfall listed in the question. So rejected.

(C) the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 >>> There is no such rainfall listed.

(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 >>> If 1910 received 1.5inch of rainfall, then 1990 would have received 3inch rainfall. But 2+ inch means heavy rainfall. So this is incorrect too.

(E) the average amount of rainfall per month was lower in 1990 than in 1910 >> This will mean that 1990 had less rainfall than 1910.

Re: In Patton City, days are categorized as having heavy [#permalink]

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23 Jun 2010, 05:51

Wow..real sneaky!! Missed it completely.
_________________

If you have made mistakes, there is always another chance for you. You may have a fresh start any moment you choose, for this thing we call "failure" is not the falling down, but the staying down.

Re: In Patton City, days are categorized as having heavy [#permalink]

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23 Jun 2010, 05:54

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buffdaddy wrote:

quantum 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 definitely possible. Consider in 1990 one day about 1000000000 inches fell. (just kidding, but u get the point) B. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910 can't be true because we know moderate and light says were fewer in 1990 than in 1910

C. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910 same problem as in B

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 not mathematically possible. We can only get twice the amount of rainfall if [color=#8000FF]the number of moderate days were the same and all the moderate days in 1990 have 2 inches of rain and all the moderate rain days have 1 inch of rain in 1910[/color]

Nowhere in the question it is mentioned that no of moderate days were the same.??? Please correct me if I am wrong E. the average amount of rainfall per month was lower in 1990 than in 1910 not possible (unless there were more months in 1990 )since we are told total in 1990 was hight really tuff one

Re: In Patton City, days are categorized as having heavy [#permalink]

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23 Jun 2010, 07:33

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D is not possible because it contradicts the prompt.

The prompt says "moderate rainfall (more than one inch, but no more than two inches)".

D says that the total number of incheas with moderate rainfall was more than twice what it had been. Since moderate rainfall, as defined in the prompt, is more than one but less than two, it isn't possible for this answer to work.

Schools: University of Texas at Austin, Michigan State

Re: In Patton City, days are categorized as having heavy [#permalink]

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23 Jun 2010, 07:45

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First I chose D, then after reviewing I see how A is the correct answer.

From the first statement we know

1990 has fewer light rainfall days fewer moderate rainfall days 20% more total rainfall

I think the question's design is for you to search for an explanation for the difference. We all know the questions:

"Which one of the following would best explain the seeming contradiction" or some wording similar......So this is the way we approach this question, that leads us to find D as a possible explanation.

But they questions is which could possibly be true.

You could read choice A as follows:

It is possible that in Patton City the number of days with heavy rainfall was lower in 1990 than in 1910.

Yes it is possible, why not. For example....

In 1990 we could have 10 days with heavy rainfall, and in 1910 we could have 11 days with heavy rainfall.

This example reminds us that when we see which could be true.....we should keep a very open mind.

I tried out some sample data for D. 1910 --> 100 moderate days x 1.0000000000000000000000000000000001 inches each day = c. 100 inches on moderate days 1990 --> 99 moderate days x 2 inches each day = 198 inches

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