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Hi, Although, I am not aware of any formula on this concept. However, I think the rule that you are speaking about would be applicable in the case of a cube (for volume)/ square (for area).

For this question, the figure would be a cuboid. So, lbh (volume) = 10
Now, 2l*2b*2h=8lbh=8*10=80. Thus, (D)

by pankajks2010

Mon Nov 21, 2011 4:03 am
Forum: Problem Solving
Topic: Carpenter
Replies: 4
Views: 3132

@Ronald: Thanks a lot for your note. I think you are spot on with your assessment. I didn't even touch OG in the last 4 months and indeed my Verbal scores in GMATPrep were lower than what I used to score in Kaplan. A difference of good 4-5 points. I'll go back to OG now. Congratulations for your sco...

by pankajks2010

Tue Aug 23, 2011 7:27 pm
Forum: I just Beat The GMAT!
Topic: GMAT 660; Quant 48, Verbal 32
Replies: 9
Views: 10180

thanks for encouraging words prodizy. Hopefully, it turns out to be just a bad day and not a serious issue in my approach. Yes, I did write essays for AWA while I took the mocks. When I started my preparation, I noticed that I was more inclined towards relying upon my ears than on actual grammar. So...

by pankajks2010

Sun Aug 21, 2011 6:53 pm
Forum: I just Beat The GMAT!
Topic: GMAT 660; Quant 48, Verbal 32
Replies: 9
Views: 10180

GMAT 660; Quant 48, Verbal 32

I took my GMAT today and scored a total of 660, much below the average score that my target schools accept. Needless to say that I am shell-shocked with the score in Verbal. Of utmost concern is my inability (at the moment) to figure out the mistakes. My strategy while answering verbal questions (SC...

by pankajks2010

Sun Aug 21, 2011 9:40 am
Forum: I just Beat The GMAT!
Topic: GMAT 660; Quant 48, Verbal 32
Replies: 9
Views: 10180

Its A, please refer to the link above for detailed explanations.

Thanks,
Pankaj

by pankajks2010

Sat Jul 30, 2011 10:40 am
Forum: Sentence Correction
Topic: Subject-verb agreement
Replies: 3
Views: 1321

Subject-verb agreement

Virtually undisturbed for the last three centuries on their starkly beautiful islands near the edge of the Arctic Circle, the inhabitants of the Lofotens have evolved folkways and a life-style that bring warmth to their harsh environment. (A) the inhabitants of the Lofotens have evolved folkways and...

by pankajks2010

Sat Jul 30, 2011 9:27 am
Forum: Sentence Correction
Topic: Subject-verb agreement
Replies: 3
Views: 1321

In this case, a general equation for x can be : x=5k+2, where k is an integer

by pankajks2010

Tue Jul 19, 2011 12:30 am
Forum: Problem Solving
Topic: Multiples
Replies: 3
Views: 1288

knight247 wrote: Total number of students=P+H+W-{(P Intersection H)+(P Intersection W)+(H Intersection W)}
-2(P Intersection H Intersection W)+number of ppl in no club
Hi there, Please can you explain why you have taken 2 in the last part of the above mentioned formula??

by pankajks2010

Mon Jul 18, 2011 11:50 pm
Forum: Problem Solving
Topic: Club Problem
Replies: 13
Views: 1967

amazing question..totally missed it, till the time saw Anurag's explanation..great!!

by pankajks2010

Thu Jul 07, 2011 8:24 am
Forum: Data Sufficiency
Topic: Modulus
Replies: 22
Views: 11306

Hi there, I'll give it a try. Lets assume that the initial number of boys and girls be x & y respectively. Now, as per the question, the ratio of boys to girls is 2 to 5, ie; ratio of x to y is 2 to 5 which can be written mathematically as x/y=2/5 ==> 5x=2y ==> 5x-2y=0 ----Let this be our equati...

by pankajks2010

Mon Jul 04, 2011 11:20 am
Forum: Problem Solving
Topic: Ratio Problem (Help needed)
Replies: 3
Views: 1450

thanks for the responses.

I too chose C and was not at all convinced with the OA as "B".

The source is provided below:
http://www.gmatdaily.com/20110621-gmat- ... e-day.html

by pankajks2010

Sat Jul 02, 2011 8:34 pm
Forum: Critical Reasoning
Topic: Population in developing economies
Replies: 6
Views: 2152

I too eliminated B & C on the basis of wrong modification by "only" in the sentences. I go with D.

by pankajks2010

Fri Jul 01, 2011 2:28 am
Forum: Sentence Correction
Topic: Kaplan 800- ans changes meaning
Replies: 7
Views: 1649

Population in developing economies

Demographic experts predict that the global human population will reach its peak sometime in the middle of this century, after which it will begin to decline. Population growth is driven primarily by high birth rates in developing countries. It is known that when women have access to education and e...

by pankajks2010

Fri Jul 01, 2011 1:27 am
Forum: Critical Reasoning
Topic: Population in developing economies
Replies: 6
Views: 2152

@Geva: and that's exactly how they have reasoned in the OA (by focusing on the specific timing of the event)...Thanks!!

by pankajks2010

Sat Jun 25, 2011 10:28 pm
Forum: Critical Reasoning
Topic: Conditions
Replies: 7
Views: 1626