Search found 148 matches
Same here, don't see why y^3/x^2 is not the answer....2010gmat wrote:i believe puss is right...y^3/x^2 shud be the ans
is there any catch??
- by lilu
Tue May 05, 2009 6:19 am- Forum: Problem Solving
- Topic: x men y work
- Replies: 5
- Views: 1254
how was 8x8x8 calculated? Thanks Do you mean WHY 8*8*8 is calculated? Because if you visualize a cube with a painted surface, you'll have every cube on the top with a painted side and every cube on the bottom with a painted side=10-2=8 Same with the sides: you'll have every cube on each side with o...
- by lilu
Mon May 04, 2009 12:04 pm- Forum: Problem Solving
- Topic: A large wooden cube... (probability)
- Replies: 5
- Views: 3016
I think the answer to both versions of the question is B First version: Let 1970=100 Then, 1980=100*1.2=120 And 1990=100*1.3=130 And the % increase from '80 to '90 is 120/130~9.2% Second version: Let 1970=100 Then, 1980=100*1.2=120 And 1990=120*1.3=156 And the % increase from '80 to '90 is 120/156~7...
- by lilu
Sun May 03, 2009 8:20 pm- Forum: Data Sufficiency
- Topic: Percentage increase question
- Replies: 5
- Views: 6102
- by lilu
Sun May 03, 2009 8:01 pm- Forum: Data Sufficiency
- Topic: GMATPrep number properties
- Replies: 16
- Views: 6462
Re: cows eating husk
Badly worded question. How do you know that all the cows are eating at the same rate?maihuna wrote:In a diary farm 40 cows eat 40 bags of husk in 40 days, in how many days one cow will eat one bag of husk?
1/40
1/10
1
40
80
- by lilu
Sun May 03, 2009 6:48 pm- Forum: Problem Solving
- Topic: cows eating husk
- Replies: 4
- Views: 1431
http://www.beatthegmat.com/f-a-b-f-a-f-b-t35045.html
DanaJ gives an excellent explanation to this problem in the link attached
- by lilu
Sun May 03, 2009 4:41 pm- Forum: Problem Solving
- Topic: Function question
- Replies: 3
- Views: 1334
This is a problem with permutations with repetition. http://regentsprep.org/regents/math/permut/LpermRep.htm Basically, the directions U-up and L-left --> UULLL can be arranged in 5!/2!*3! ways--> 10 ways because U is repeated twice and L is repeated three times. It's similar to letter combinatorics...
- by lilu
Sun May 03, 2009 4:33 pm- Forum: Problem Solving
- Topic: PS - Combinatory
- Replies: 4
- Views: 1553
- by lilu
Sun May 03, 2009 11:41 am- Forum: Problem Solving
- Topic: Proportion and chain rule
- Replies: 8
- Views: 3978
- by lilu
Sun May 03, 2009 11:10 am- Forum: Problem Solving
- Topic: A large wooden cube... (probability)
- Replies: 5
- Views: 3016
This Q has been answered many-many times.
http://www.beatthegmat.com/gmatprep-qua ... -t222.html
there is a good explanation from Mark Dabral
- by lilu
Sun May 03, 2009 10:53 am- Forum: Problem Solving
- Topic: GMAT Prep
- Replies: 1
- Views: 998
OH!
That's what I thought!
Then--->
117men*8hrs*33days=4/7 of a job
30888hrs=4/7 of job
30888/ 4/7 = x hrs / 3/7
x=23166 hrs
#of workers*13 days*9hours=23166
# of workers=198
AND 198-117=81
I am not I'd be able to do this one in under two minutes b/c of all the calculations....
- by lilu
Sun May 03, 2009 10:49 am- Forum: Problem Solving
- Topic: Proportion and chain rule
- Replies: 8
- Views: 3978
Re: Proportion and chain rule
A contract is to be completed in 46 days and 117 men were set to work, each working 8 hrs a day. After 33 days 4/7 of the work is completed. How many additional men may be employed so that the work may be completed in time, each men now working 8 hrs a day? a.46 b.57 c.64 d.75 e.81 i get 105 worker...
- by lilu
Sun May 03, 2009 10:47 am- Forum: Problem Solving
- Topic: Proportion and chain rule
- Replies: 8
- Views: 3978
Re: Proportion and chain rule
A contract is to be completed in 46 days and 117 men were set to work, each working 8 hrs a day. After 33 days 4/7 of the work is completed. How many additional men may be employed so that the work may be completed in time, each men now working 8 hrs a day? a.46 b.57 c.64 d.75 e.81 Are you sure the...
- by lilu
Sun May 03, 2009 10:36 am- Forum: Problem Solving
- Topic: Proportion and chain rule
- Replies: 8
- Views: 3978
4p IS n,so it's already countedvkb16 wrote:replyin to the post after a LOOONG time, but here goes
I got the apporach, however, the qs says how many factors....., INCLUDING n
shouldnt the answer be 5? since we're including n as well?
pardon me if this a dumb comment.. just ramping up my doubts.. :roll:
- by lilu
Sun May 03, 2009 10:16 am- Forum: Problem Solving
- Topic: Divisibility/Primes: If n=4p, where p is prime number greate
- Replies: 11
- Views: 11229
A. Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive---> not only, but also should be used with things that are similar in nature; here you have two positive aspects of deforestation listed fir...
- by lilu
Fri May 01, 2009 8:38 pm- Forum: Sentence Correction
- Topic: GMAT Prep SC
- Replies: 1
- Views: 1527