rainfall problem

Forum Index GMAT Verbal & Essays Critical Reasoning

New MBA Student Life Forum: Ask your questions to current MBA students from Harvard, Stanford, Wharton, Kellogg and Haas

Post new topic   Reply to topic

rohittk
Just gettin' started!



Joined: 04 Jun 2009
Posts: 27

Thanks given: 0
Thanked 1 times in 1 posts

Target GMAT Score: 750
GMAT Score: 670
Topic: rainfall problem
PostTue Aug 11, 2009 11:24 am Reply with quote
Can somebody please help me in identifying the correct option with explanations.

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
Back to top
View user's profile Send private message
madhur_ahuja
GMAT Destroyer!



Joined: 02 May 2009
Posts: 435

Thanks given: 7
Thanked 14 times in 14 posts
PostTue Aug 11, 2009 11:41 am Reply with quote
IMO C
Back to top
View user's profile Send private message
real2008
GMAT Destroyer!



Joined: 01 May 2008
Posts: 500

Thanks given: 44
Thanked 7 times in 7 posts
PostTue Aug 11, 2009 12:09 pm Reply with quote
it is D
Back to top
View user's profile Send private message
arjunnattar
Just gettin' started!



Joined: 12 Oct 2006
Posts: 16

Thanks given: 0
Thanked 0 times in 0 posts
Location: India
PostTue Aug 11, 2009 12:15 pm Reply with quote
I would go with C ..
_________________
Warm regs,
Arjun
Back to top
View user's profile Send private message
niraj_a
GMAT Destroyer!



Joined: 01 Jun 2008
Posts: 708

Thanks given: 5
Thanked 9 times in 9 posts
Location: USA
PostTue Aug 11, 2009 12:45 pm Reply with quote
C, between B and C.
Back to top
View user's profile Send private message
real2008
GMAT Destroyer!



Joined: 01 May 2008
Posts: 500

Thanks given: 44
Thanked 7 times in 7 posts
PostTue Aug 11, 2009 12:56 pm Reply with quote
rohit! OA please....
Back to top
View user's profile Send private message
nikita27
Just gettin' started!



Joined: 24 Jul 2009
Posts: 12

Thanks given: 0
Thanked 0 times in 0 posts
PostTue Aug 11, 2009 1:00 pm Reply with quote
D. the days for light rainfall and moderate rainfall is less in 1990 compared to 1910. In other words, days with no more than 2 inches rainfall in 1990 is < in 1910. There fore the C & D are out of Q bcoz it's given in the Q that the Light and Moderate rainfall IS LESS in 1990.

If the L & M Days are less in 1990 than in 1910 then only 2 things can make a difference,

1. either the Heavy rainfall days were high
ii. or in same no of days of L & M Rainfall, the amount of rain was more than the amount in 1910.

We do not have an option for #1 (A proves otherwise) and for #2, the D gives an evidence as in 1910, the rainfall could have been 1 inch and in 1990, it could be 2 inchec, thus increasign the % of rainfall.
Back to top
View user's profile Send private message
georgeung
Rising GMAT Star



Joined: 23 Jul 2009
Posts: 52

Thanks given: 14
Thanked 1 times in 1 posts
Location: Irvine, CA

Test Date: October
Target GMAT Score: :)
PostTue Aug 11, 2009 1:10 pm Reply with quote
Oh man, this is a hard one...

Is it A?

Here's my reasoning, let me know if it's shotty.

A: No way, there must be more days because the "Light" and "Moderate" are both lower.

B: Can't be the same, they said 1990 was less.

C: Can't be higher, they said 1990 was less.

D: Total number of inches on days with moderate in 1990 was twice than 1910, can't be.

E: This can't happen if 1990 was twenty percent higher.

Holy crap, I ruled them all out.

I went over the ones I liked:

A: Umm...well, this may be true, because if it's heavy rain, then it can go over 2 inches...it could have rained 100 inches in one day and still had less number of days of heavy rain in 1990 than 1910.

D: Total number that fell on days with moderate...still can't happen.

I picked A. If this isn't right, I need someone to put an in depth answer, cuz it looks like all of the answer choices suck.
Back to top
View user's profile Send private message
pandeyvineet24
GMAT Destroyer!



Joined: 02 Jun 2008
Posts: 465

Thanks given: 4
Thanked 12 times in 12 posts
Location: Atlanta

Target GMAT Score: 720
PostTue Aug 11, 2009 1:11 pm Reply with quote
nikita27 wrote:
D. the days for light rainfall and moderate rainfall is less in 1990 compared to 1910. In other words, days with no more than 2 inches rainfall in 1990 is < in 1910. There fore the C & D are out of Q bcoz it's given in the Q that the Light and Moderate rainfall IS LESS in 1990.

If the L & M Days are less in 1990 than in 1910 then only 2 things can make a difference,

1. either the Heavy rainfall days were high
ii. or in same no of days of L & M Rainfall, the amount of rain was more than the amount in 1910.

We do not have an option for #1 (A proves otherwise) and for #2, the D gives an evidence as in 1910, the rainfall could have been 1 inch and in 1990, it could be 2 inchec, thus increasign the % of rainfall.
Considering your point 1.
Can't we have fewer days (fewer in 1990 than in 1910), and still end with more rainfall than in 1910. In that case Option A stands a chance. This logic is similar to what you did for point 2.
Am i missing some thing ?

Rohit, Please let us know the source of the question.
Back to top
View user's profile Send private message
georgeung
Rising GMAT Star



Joined: 23 Jul 2009
Posts: 52

Thanks given: 14
Thanked 1 times in 1 posts
Location: Irvine, CA

Test Date: October
Target GMAT Score: :)
PostTue Aug 11, 2009 1:30 pm Reply with quote
Damn, after reading what Nikita and Pandey wrote, I'm back to choosing A or D....

But I still want to rule out D because there's no way it can happen. The most moderate rainfall that can happen is 1.99 inches of rain in 1990 and the least is 1.00 in 1910. 1990 rain cannot go above 2.0 inches. If the rule is that there were less days of rain in 1990 than 1910, but the answer choice states that the total rain fall in 1990 is twice than 1910, then D is only possible if there were more days of rain in 1990 than 1910.
Back to top
View user's profile Send private message
crackgmat007
GMAT Destroyer!



Joined: 20 Feb 2009
Posts: 871

Thanks given: 63
Thanked 10 times in 10 posts
PostTue Aug 11, 2009 5:59 pm Reply with quote
D for me.
Back to top
View user's profile Send private message
mohitsharda
Rising GMAT Star



Joined: 01 Aug 2009
Posts: 62

Thanks given: 0
Thanked 3 times in 3 posts

Target GMAT Score: 760+
GMAT Score: 740
PostTue Aug 11, 2009 8:25 pm Reply with quote
Answer should be D
_________________
MS
Back to top
View user's profile Send private message
Musicolo
Really wants to Beat The GMAT!



Joined: 01 Feb 2009
Posts: 111

Thanks given: 0
Thanked 0 times in 0 posts
PostWed Aug 12, 2009 12:16 am Reply with quote
I dont think its D since moderate rainfall does not exceed two inches. I would go for C.
Back to top
View user's profile Send private message
acenikk
Rising GMAT Star



Joined: 31 Jul 2009
Posts: 38

Thanks given: 1
Thanked 1 times in 1 posts
PostWed Aug 12, 2009 12:56 am Reply with quote
I will go with A.
Back to top
View user's profile Send private message
georgeung
Rising GMAT Star



Joined: 23 Jul 2009
Posts: 52

Thanks given: 14
Thanked 1 times in 1 posts
Location: Irvine, CA

Test Date: October
Target GMAT Score: :)
PostWed Aug 12, 2009 6:45 am Reply with quote
LOL, when is the OA coming? I've been waiting almost a whole day for it.
Back to top
View user's profile Send private message
Display posts from previous:   

Post new topic   Reply to topic All times are GMT - 8 Hours
Goto page 1, 2, 3  Next
Page 1 of 3