Search found 34 matches
Are you located in USA? My GMAT exam is this friday and if I get a respectable score, I would be happy to send you my books for free. I have MGMAT books and Kaplan book. You should try looking on Craigslist as well. You might get lucky!! Good luck for your exam. Does anyone have any suggestions on h...
- by amittilak
Tue Feb 23, 2010 1:36 pm- Forum: GMAT Strategy
- Topic: Studying on a budget
- Replies: 6
- Views: 1472
Hi, I used following approach: Subtracting 9 from 285 gives us 276, which must be a multiple of one of the correct answer choices. Clearly, we can see that the answer must be 138. To recheck, subtract 7 from 1249, which gives us 1242. 1242 = 138 * 9 Harsh, can you please post the source for this que...
- by amittilak
Wed Feb 17, 2010 4:50 am- Forum: Problem Solving
- Topic: Greatest Number
- Replies: 4
- Views: 3308
Hi,
This is the method I use for most of the mixture problems:
20 + x = 20 + x
(5% E/95%G) (100% E) (10% E/90%G)
(5/100)*20 + x = (10/100) * (20 + x)
100 + 100x = 200 + 10x
90x = 100
x = 10/9 gal.
- by amittilak
Tue Feb 16, 2010 1:16 pm- Forum: Problem Solving
- Topic: Mixture
- Replies: 6
- Views: 2860
I think for many questions its a personal choice wether to use algebra or plug in numbers. For this problem, I would use algebra: We have consecutive odd numbers "X", with largest number "Z" Now, for evenly spaced sets, The number of terms is calculated as: X = (Z - L)/n + 1 n = ...
- by amittilak
Tue Feb 16, 2010 12:21 pm- Forum: Problem Solving
- Topic: Number Series
- Replies: 8
- Views: 2281
This is a good question for rates. Here's how I solved: R*T=D Gloria travels for 20 mins @ 12mph D = 12*20/60 = 4 miles, Which means the distance between her mother and Gloria is 4 miles. Now, the mother's speed is 36 mph, which means that she is catching up to Gloria @ 36 - 12 = 24 mph Time in minu...
- by amittilak
Tue Feb 16, 2010 12:06 pm- Forum: Problem Solving
- Topic: Puzzling math problem (for me anyway)
- Replies: 6
- Views: 1361
son of a gunn........ this is probably the best traps I have seen.. especially if you get this in questions 25 and up, when most people are running little short on time.
- by amittilak
Tue Feb 16, 2010 11:50 am- Forum: Problem Solving
- Topic: Tough Algebra, Can anyone help me? Thanks!!
- Replies: 12
- Views: 2073
Ajith, In your case 3, you have 4/10*4/11* 5/10 I think it should be, 4/10*4/11*7/10, since you are adding 1 extra red ball from Urn B to urn A. That gives us, (6*5*6+6*6*5+4*4*7+4*7*6)/(10*11*10 = 27/55 What's the OA on this? Q : Urn A contains six red and four black balls and Urn B contains four r...
- by amittilak
Tue Feb 16, 2010 11:44 am- Forum: Problem Solving
- Topic: Intermediate Probability
- Replies: 8
- Views: 1323
My approach was slightly similar to one used by another poster here. However, instead of Range, calculated the mean for all the choices and found the sets with the farthest spread from the mean. Answer choice A and D have same maximum spread from the mean. However, since Answer choice D has more num...
- by amittilak
Thu Feb 11, 2010 11:35 am- Forum: Problem Solving
- Topic: sd
- Replies: 14
- Views: 1975
Here's my 2 cents: C + D = 55 AFTER ADOPTION, MAXIMIZE, C/5 + D/4 SINCE, 1/5 < 1/4 The answer lies between, C/4 + D/4 AND C/5 + D/5 OR Between 55/4 and 55/5 or between 13.75 and 11. Now, we know that our answer has to be an integer lower than 13.75 and greater than 11. I chose 13 and did a quick bac...
- by amittilak
Thu Feb 11, 2010 11:25 am- Forum: Problem Solving
- Topic: Cats and Dogs
- Replies: 7
- Views: 2572
John,
Let me be the first to congratulate you on ur gre8 achievement!!!! best of luck fr ur applications.
AT
- by amittilak
Fri Feb 05, 2010 6:28 am- Forum: I just Beat The GMAT!
- Topic: Crushed the GMAT! 770, 49Q, 46V
- Replies: 17
- Views: 12895
Hint: If you are in a jam and don't know what symmetrical @ x=2 means, you can always use the dirty way to guess. I pictured an imaginary line from x=3 to the graph and then perpendicular to the y axis and the closest answer choice was 1. Ofcourse I would be very cautious when using this method but ...
- by amittilak
Mon Feb 01, 2010 10:43 am- Forum: Problem Solving
- Topic: OG 12th edition - Q # 9
- Replies: 10
- Views: 1727
wow.... I hate to admit this but I have my test next month and I am afraid that I may attempt the stunt of going out for a smoke...lol... On a more serious note though, I really think it would be a bad idea... I mean you really don't want to put your future on line for a smoke break. My dear fellow ...
- by amittilak
Wed Jan 27, 2010 8:46 pm- Forum: GMAT Strategy
- Topic: Any smokers out there?
- Replies: 11
- Views: 4608
you are welcome...money9111 wrote:Thank you amittilak I think that rule will be much easier to remember... adding that to notecards right now!
I forgot to mention something in my last post. Maybe you already know this but if the slopes of the lines are equal, the lines are parallel.
- by amittilak
Wed Jan 27, 2010 7:31 pm- Forum: Problem Solving
- Topic: cod
- Replies: 12
- Views: 1891
so because of the lengths which we were able to find using the other formula... we use Pyth. Th. to recognize that it's a right triangle? Alternatively, we can find slope between points (5,4) and (2,5) and compare it with slope for line between (2,5) and (1,2). For perpendicular lines, the slope mu...
- by amittilak
Wed Jan 27, 2010 12:54 pm- Forum: Problem Solving
- Topic: cod
- Replies: 12
- Views: 1891
Given: sqrt x = 25, which equals to, sqrt (x) = 5^2 (you have to realize after looking at the answer choices that you need to find the value in terms of 5) hence, x = 5 ^4 and x^2 = 5^8 Now, lets look at what was asked: x^3 - x^2 = ?? Simplifying, x^3 - x^2 = x^2 (x - 1) = 5^8 (5^4 - 1), which happe...
- by amittilak
Wed Jan 20, 2010 10:42 am- Forum: Problem Solving
- Topic: If sqrt x = 25, then x^3 – x^2 = ?
- Replies: 7
- Views: 11334