Search found 759 matches

DS - interesting problem

Data Sufficiency

hi all. it seems that it is kind of problems in which plugging and obtaining yes and no answer works better than any other ways, i honestly tried to simplify but looks like it does not work here at first we need to determine does ((2a-b)/(2b-a))>((2b-a)/2a-b)) after simplify i got does (a^2-b^2)/((2...

by clock60

Sun Jul 31, 2011 3:16 am
Forum: Data Sufficiency
Topic: DS - interesting problem
Replies: 8
Views: 1897

DS-percentage change

Data Sufficiency

hi
seems like E
(1) if in 2005 the sales in B were X, sales in A were (1/4)*x insuff
(2) if in 2006 the sales in B were x1. sales in A were (3/4)*x1
eveb together it is impossible to know
(3/4)*x1-(1/4)*x-? at least we need to know the ratio between x and x1

by clock60

Sun Jul 31, 2011 1:54 am
Forum: Data Sufficiency
Topic: DS-percentage change
Replies: 2
Views: 1089

Diesel engines burn as much as 30 percent

Sentence Correction

hi aspirant i understand your doubts about D, (D) that have a comparable size, and also they emit far less carbon dioxide gas and other gases that have as i think, far less here refers not only to carbon dioxide, but far less is implied before other gases, imagine that gasoline engines emit some gas...

by clock60

Sat Jul 30, 2011 11:35 pm
Forum: Sentence Correction
Topic: Diesel engines burn as much as 30 percent
Replies: 25
Views: 14782

Subject-verb agreement

Sentence Correction

http://www.beatthegmat.com/easiest-sc-q ... 55100.html

by clock60

Sat Jul 30, 2011 10:01 am
Forum: Sentence Correction
Topic: Subject-verb agreement
Replies: 3
Views: 1143

Diesel engines burn as much as 30 percent

Sentence Correction

hi aspirant, i saw this problem earlier. solved it wrong picking B,but think that i can explain something C)far fewer carbon dioxide. carbon dioxide is uncountable so we need far less. also they is dubious here, but i believe that it is a small problem D) i dont like: that have comparable size.agai...

by clock60

Sat Jul 30, 2011 9:47 am
Forum: Sentence Correction
Topic: Diesel engines burn as much as 30 percent
Replies: 25
Views: 14782

A recent poll indicates that many people

Sentence Correction

i want to believe that B is wrong, because but is || marker, and it must connect || parts of the sentence, here but connects denounce but supporting that are not ||. perhaps better to write they denounce.....but support. main verbs are ||. or in case of two independent sentence they denounce....,but...

by clock60

Fri Jul 29, 2011 1:09 pm
Forum: Sentence Correction
Topic: A recent poll indicates that many people
Replies: 12
Views: 5956

A recent poll indicates that many people

Sentence Correction

hi aspirant, great unpleasant sentence it cant be B they denounce.....but supporting, not || it cant be C they denounce....., say... between denounce and say we need conjunction, perhaps denounce and say will be better version. it cant be E while they are denouncing-....supporting...the main prob...

by clock60

Fri Jul 29, 2011 12:07 pm
Forum: Sentence Correction
Topic: A recent poll indicates that many people
Replies: 12
Views: 5956

Knewton Problem

Data Sufficiency

hi, i`ll try to translate in math terms
let it be p the number of sheeps in the pen
(2/3)*p-8=(2/3)*p-(2/3)*p*1/4
(2/3)*p-8=(2/3)*p(1-1/4)
(2/3)*p-8=(2/3)*p*(3/4)
(2/3)*p-8=(1/2)*p
p*(2/3-1/2)=8
p*(1/6)=8
p=48
so suff

by clock60

Wed Jul 27, 2011 1:23 pm
Forum: Data Sufficiency
Topic: Knewton Problem
Replies: 6
Views: 1669

tricky

Data Sufficiency

for sure i am wrong but my pick is A we have set of integers 1.a2.a3.a4.a5, and need to find a5 -greatest (1)1+a2+a3+a4+a5=20, with median a3=4, to make a5 greatest, first least value for a2 is 2, and least for a4=5, the remainder for a5=20-(1+2+4+5)=8,so given set looks like 1,2,4,5,8 as for st 2 r...

by clock60

Wed Jul 27, 2011 12:42 pm
Forum: Data Sufficiency
Topic: tricky
Replies: 9
Views: 1516

GMATprep Test2 DS

Data Sufficiency

hi
according to the problem, the value of x could be x=2 if x>=-2, or x could be x=-6 if x<-2
(1) says that x does not equal 2, or -2, so the only value of x left is x=-6
as |-6+2|=|-4|=4
1 st is also suff

by clock60

Wed Jul 27, 2011 12:03 pm
Forum: Data Sufficiency
Topic: GMATprep Test2 DS
Replies: 5
Views: 1442

pls Explain!!!

Sentence Correction

vote for C

by clock60

Tue Jul 26, 2011 12:25 pm
Forum: Sentence Correction
Topic: pls Explain!!!
Replies: 5
Views: 1321

Gone are the sharp edges and jutting planes of styles from

Sentence Correction

killing problem
thanks Aspirant for posting and Vineeshp for providing link

by clock60

Mon Jul 25, 2011 9:39 am
Forum: Sentence Correction
Topic: Gone are the sharp edges and jutting planes of styles from
Replies: 10
Views: 5162

Manhattan Quant

Data Sufficiency

Ozlemg wrote:IMO D.

Statement 1 helps us to figure out that AC // DE. So we can solve the prolem.

Statement 2 is also sufficient. (Property of similarity in triangles)

Thanks
hi Ozlemg
can you elaborate how you established that AC||DE using st 1?i am a bit confused
thanks

by clock60

Mon Jul 25, 2011 8:52 am
Forum: Data Sufficiency
Topic: Manhattan Quant
Replies: 6
Views: 1746

Manhattan Quant

Data Sufficiency

B for me, if DE||CA, then triangles DEB and CAB are similar, so DE is also 7.

by clock60

Sun Jul 24, 2011 12:44 pm
Forum: Data Sufficiency
Topic: Manhattan Quant
Replies: 6
Views: 1746

Manhattan Quant

Data Sufficiency

hi all, i want to believe that the answer is D
(1)r+s>2t, and t>s, if we sum both we get
r+s+t>2t+s. canceling s, left us with r+t>2t. and finally r>t suff
(2)the same way
r+s>2t, and r>s, again sum, 2r+s>2t+s, cancel s and left with 2r>2t, r>t also suff

by clock60

Sun Jul 24, 2011 12:21 pm
Forum: Data Sufficiency
Topic: Manhattan Quant
Replies: 5
Views: 1145