## Search found 148 matches

- by lilu

Tue May 26, 2009 12:39 pm- Forum: I just Beat The GMAT!
- Topic: 730 Q48 V42 AWA 5.0
- Replies:
**7** - Views:
**3171**

- by lilu

Wed May 13, 2009 3:42 pm- Forum: I just Beat The GMAT!
- Topic: 740 from Russia
- Replies:
**6** - Views:
**1961**

- by lilu

Wed May 13, 2009 3:39 pm- Forum: I just Beat The GMAT!
- Topic: Dana's tale
- Replies:
**73** - Views:
**69448**

##### Re: GMAT Prep

In the fraction x/y, where x and y are positive integers, what is the value of y? 1.) The least common denominator of x/y and 1/3 is 6 2.) x = 1 OA E Statement 1---> x/y and 1/3 have a common denominator=6. y (the denom. of x/y) can equal 2 or 6, not suff Statement 2--->x=1, but it doesn't give us ...

- by lilu

Tue May 12, 2009 10:16 am- Forum: Data Sufficiency
- Topic: GMAT Prep
- Replies:
**4** - Views:
**953**

The question tells you that C=k*t*l^2 Where C=cost, k=coefficient of proportionality (what you need to find), t-thickness,l-length. So, 1. tells us that k*0.2*4 - k*0.1*4 = 160------> k = 400 Using this information we can find the Cost of the slab in the original q---> C=400*0.1*9 = 360 Same goes fo...

- by lilu

Sat May 09, 2009 12:57 pm- Forum: Data Sufficiency
- Topic: GMAT Prep
- Replies:
**5** - Views:
**1261**

I'd like to pull this thread up and see if any of the experts can comment on this problem. I have the same confusion as scoobydooby has because I think that the problem states that values need to be LESS than 8/9 and 1/8 and if we take the closest values (but less) to these, we get a value less than...

- by lilu

Fri May 08, 2009 9:29 am- Forum: Data Sufficiency
- Topic: GMAT PREP QUESTION
- Replies:
**6** - Views:
**2326**

IMO C 1) not sufficient A = -1/2 ---> -1/8 > -1/2 A = -2 ----> -8 < -2 2) not sufficient A = 2 ---> 8 > 2 A = 1/2 ---> 1/8 < 1/2 both together -1 < A < 0 A = -1/2 ---> -1/8 > -1/2 sufficient Not able to understand A = -2 ----> -8 < -2. If A= -2 cube root of A will be greater than -2. Even take more...

- by lilu

Thu May 07, 2009 9:02 am- Forum: Data Sufficiency
- Topic: Tricky Problem
- Replies:
**3** - Views:
**679**

Read Stuart's explanation of this problem if you want to see an easy and effective way to solve it:

http://www.beatthegmat.com/ds-question-t11853.html

- by lilu

Thu May 07, 2009 7:10 am- Forum: Data Sufficiency
- Topic: probability
- Replies:
**3** - Views:
**897**

##### Re: GMATPrep Bookstore

IMO E. Statement 1: Can be represented in an equation as 2P+3H=12.5. 2 variables & 1 equation, so not sufficient Statement 2: Can be represented in an equation as 4P+6H=25 ==> 2P+3H=12.5. 2 variables & 1 equation, so not sufficient Together also the statements are not sufficient because they both r...

- by lilu

Thu May 07, 2009 6:45 am- Forum: Data Sufficiency
- Topic: GMATPrep Bookstore
- Replies:
**3** - Views:
**972**

##### GMATPrep Bookstore

I would appreciate an explanation :D I'll post the OA after a few responses Sorry, I had trouble attaching the question. Here it is typed: A bookstore that sells books sells each of its paperbacks for a certain price and each of its hardcover books for a certain price. If Joe, Maria, and Paul bought...

- by lilu

Wed May 06, 2009 8:31 pm- Forum: Data Sufficiency
- Topic: GMATPrep Bookstore
- Replies:
**3** - Views:
**972**

Here is another way, analytically. I found this easier and can do it fast as well (under 1 min) let the married couples be denoted as Aa Bb Cc Dd Ee Let us write the 3 spots as below Spot1 Spot2 Spot3 Now Spot 1 can be occupied by any of the 10 ppl so Spot 1 = 10 ways -------------------(1) Spot 2 ...

- by lilu

Tue May 05, 2009 7:54 pm- Forum: Problem Solving
- Topic: committee
- Replies:
**8** - Views:
**7886**

I think that the catch in the second problem is to realize that x+y=1, then you'll be able to eliminate one extra unknown.

- by lilu

Tue May 05, 2009 10:16 am- Forum: Data Sufficiency
- Topic: Pls help me understand the logic of these 2 DS problems
- Replies:
**3** - Views:
**778**

We know that x+y =1 6.5x + 8.5y = C Statement1 tells us that y>0.15, then if x+y=1, then x=1-y And x<0.85, so we can't tell for sure if x is less than 0.8. Can be 0.1 or 0.84 So, insuff Statement 2 tells us that C >=7.30 Then, 6.5x + 8.5y>= 7.3 y=1-x--->6.5x+8.5(1-x)>=7.3------>6.5x+8.5-8.5x>=7.3 2x...

- by lilu

Tue May 05, 2009 10:15 am- Forum: Data Sufficiency
- Topic: Pls help me understand the logic of these 2 DS problems
- Replies:
**3** - Views:
**778**

First question: Suppose there 100 projects. Statement 1 tells us that 25 projects have 4 or MORE people working on them. These have to be the upper-end projects, since 4 or more people are working on them. So we know that the other 75 projects have fewer than 4 people working on them, but we can't s...

- by lilu

Tue May 05, 2009 9:51 am- Forum: Data Sufficiency
- Topic: Pls help me understand the logic of these 2 DS problems
- Replies:
**3** - Views:
**778**

##### Re: Division

Which of the following is the quotient of (2^9 +3^9)/35 A. 521 B. 560 C. 577 D. 627 E. 842 B-) Good one. I am sure there should be a easy way to solve this problem. I gave it just 2 mins & solved it manually to get C as the answer. You bet there is. Trying solving it that way. Mind you the numbers ...

- by lilu

Tue May 05, 2009 9:14 am- Forum: Problem Solving
- Topic: Division
- Replies:
**4** - Views:
**913**