## Search found 110 matches

##### Source - GMAT Math Bible - Nova - Equations

If a, b, and c are not equal to 0 or 1 and if a^x = b, b^y = c, and c^z = a, then xyz =

(A) 0

(B) 1

(C) 2

(D) a

(E) abc

This question is pretty challenging for me.please help me out here.

- by shanice

Tue Sep 04, 2012 6:48 pm- Forum: Problem Solving
- Topic: Source - GMAT Math Bible - Nova - Equations
- Replies:
**5** - Views:
**995**

##### Source - GMAT Math Bible - Nova - Equations

Hi guys, Please help me with the following:- 1) If (x â€“ 2y)(x + 2y) = 5 and (2x â€“ y)(2x + y) = 35, then x^2-y^2 / x^2+y^2 (A) â€“8/5 (B) â€“4/5 (C) 0 (D) 4/5 (E) 7/5 2)If l/m+n=m/n+1=n/l+m=k,where k is a real number, then which one of the following does k equal? (A) 1/3 (B) 1/2 (C) 1 (D) 2 (E) 3...

- by shanice

Tue Sep 04, 2012 6:44 pm- Forum: Problem Solving
- Topic: Source - GMAT Math Bible - Nova - Equations
- Replies:
**4** - Views:
**848**

A million thanks to you, Ian. I understand it now. I can't wait to try some questions.

Thanks, again.

- by shanice

Sun Aug 26, 2012 8:20 pm- Forum: Problem Solving
- Topic: Relative Rate or Speed
- Replies:
**5** - Views:
**1794**

- by shanice

Sun Aug 26, 2012 6:06 am- Forum: Problem Solving
- Topic: Relative Rate or Speed
- Replies:
**5** - Views:
**1794**

Hi Ian, Thank you so much for taking your time to explain about this topic. I understand the second scenario very well but I'm having a problem with the first one. I have one doubt about scenario one from the following sentence:- 1)In the first second, the distance between them falls by 9 meters on ...

- by shanice

Sat Aug 25, 2012 10:05 pm- Forum: Problem Solving
- Topic: Relative Rate or Speed
- Replies:
**5** - Views:
**1794**

I won't be using addition for this type of problem. I just wanted to know whether it was possible to solve it through this method.

Thank you.

- by shanice

Sat Aug 25, 2012 6:24 am- Forum: Problem Solving
- Topic: Population - OG-2nd Edition
- Replies:
**3** - Views:
**1014**

##### Population - OG-2nd Edition

Hi everyone, I've asked this question before and was given understandable solutions. However, I would like to know whether the below ways works for this type of problem:- A certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 10^4, what w...

- by shanice

Fri Aug 24, 2012 1:00 am- Forum: Problem Solving
- Topic: Population - OG-2nd Edition
- Replies:
**3** - Views:
**1014**

##### Relative Rate or Speed

I came across a website provided by VERITAS PREP on explanation about relative speed. I still can't understand it. I really need some clear explanation about this. Please refer to the following example provided by Veritas Prep:- Example: Say, there are two people, A and B. Case 1: A is standing stil...

- by shanice

Thu Aug 23, 2012 10:03 pm- Forum: Problem Solving
- Topic: Relative Rate or Speed
- Replies:
**5** - Views:
**1794**

- by shanice

Thu Aug 23, 2012 6:22 am- Forum: Problem Solving
- Topic: Manhattan GMATPREP
- Replies:
**3** - Views:
**849**

##### Manhattan GMATPREP

Stacy and Heather are 20 miles apart and walk towards each other along the same route. Stacy walks at a constant rate that is 1 mile per hour faster than Heather's constant rate of 5 miles/hour. If Heather starts her journey 24 minutes after Stacy, how far from her original destination has Heather w...

- by shanice

Thu Aug 23, 2012 2:00 am- Forum: Problem Solving
- Topic: Manhattan GMATPREP
- Replies:
**3** - Views:
**849**

Thank you, Vk_vinayak. How do you apply the weighted average concept in this question? Can you explain?

- by shanice

Wed Aug 22, 2012 4:24 am- Forum: Problem Solving
- Topic: Weighted Averages - Statistics
- Replies:
**4** - Views:
**1652**

##### Weighted Averages - Statistics

Hi all, I was going through the explanation in the book about weighted averages.I could not understand what the book is trying to say about this topic. Can anyone help me out by answering my below questions:- 1)What is weighted averages?What I must know about this topic? Please give an example. 2)Qu...

- by shanice

Tue Aug 21, 2012 9:13 pm- Forum: Problem Solving
- Topic: Weighted Averages - Statistics
- Replies:
**4** - Views:
**1652**

- by shanice

Thu Aug 16, 2012 10:08 pm- Forum: Problem Solving
- Topic: Population problem
- Replies:
**6** - Views:
**1390**

##### Inequalities - ManhattanGMATPrep

If 1>1-ab>0, which of the following must be true? I. a/b>0 II. a/b<1 III.ab<1 A)I only B)II only C)III only D)I and II only E)I and III only My workings:- 1>1-ab>0 1-1>1-ab-1>0-1 0>-ab>-1 From the book:- 1>1-ab>0 0>-ab>-1 0<ab<1 Answer is E. I don't understand why my workings does not match with the...

- by shanice

Wed Aug 15, 2012 11:46 pm- Forum: Problem Solving
- Topic: Inequalities - ManhattanGMATPrep
- Replies:
**1** - Views:
**623**

Kobe_Kassidy & rijul007,

Your explanation about this topic is really good. I understand it clearly and can't wait to do some questions on proportions.

Thanks for helping out guys.

- by shanice

Wed Aug 15, 2012 7:46 pm- Forum: Problem Solving
- Topic: Proportions
- Replies:
**3** - Views:
**798**