## Search found 110 matches

#### Population problem

###### Problem Solving

To [email protected] & GMATGuruNY, I understand your workings and the explanation for this problem but I have a doubt. When I read the question, the following sentence lead me to this understanding:- "A certain population of bacteria doubles every 10 minutes". So, I understood it as below:- Time Populat...

by shanice

Wed Aug 15, 2012 6:59 pm
Forum: Problem Solving
Topic: Population problem
Replies: 6
Views: 1371

#### Proportions

##### Proportions

Guys, I need your help in the proportion topic.

What is direct proportionality,inverse proportionality and linear growth means? Please give some examples.

Really appreciate the help as I'm pretty weak in this area.

Thank you.

by shanice

Wed Aug 15, 2012 10:17 am
Forum: Problem Solving
Topic: Proportions
Replies: 3
Views: 779

#### Population problem

###### Problem Solving

Thank you, guys.

by shanice

Wed Aug 15, 2012 10:12 am
Forum: Problem Solving
Topic: Population problem
Replies: 6
Views: 1371

#### Population problem

##### Population problem

A certain population of bacteria doubles every 10 minutes.If the number of bacteria in the population initially was 10^4, what was the number in the population 1 hour later?

A)2(10^4)
B)6(10^4)
C)(2^6)(10^4)
D)(10^6)(10^4)
E)(10^4)6

by shanice

Wed Aug 15, 2012 7:04 am
Forum: Problem Solving
Topic: Population problem
Replies: 6
Views: 1371

#### OG-2nd Edition

##### OG-2nd Edition

Working alone, printers X,Y, Z can do a certain printing job, consisting of a large number of pages, in 12, 15, and 18 hours, respectively. What is the ratio of the time it takes printer X to do the job, working alone at its rate, to the time it takes printers Y and Z to do the job, working together...

by shanice

Tue Aug 14, 2012 8:28 pm
Forum: Problem Solving
Topic: OG-2nd Edition
Replies: 1
Views: 622

#### EZ Solutions - Advanced Workbook

###### Problem Solving

Got it.Thank you very much.

By the way, I noticed that your test date is on 20th August 2012. I wish you all the best for your exam.

by shanice

Mon Aug 13, 2012 6:37 am
Forum: Problem Solving
Topic: EZ Solutions - Advanced Workbook
Replies: 3
Views: 1097

#### Word Problems - EZ Solutions - Advanced Workbook

##### Word Problems - EZ Solutions - Advanced Workbook

At a certain company, two-seventh of the managers attended the company's annual meeting, and one-half of them were females. If one-tenth of the managers who did not attend the annual meeting were females, what fractional part of the total number of managers were males? Solution from the book:- No. o...

by shanice

Mon Aug 13, 2012 5:10 am
Forum: Problem Solving
Topic: Word Problems - EZ Solutions - Advanced Workbook
Replies: 3
Views: 1071

#### EZ Solutions - Advanced Workbook

##### EZ Solutions - Advanced Workbook

If x-2/x-5=x, then what is the value of x^2-6x+10? Answer is 8. Please check my workings:- x-2=x(x-5) x-2=x^2-5x x^2-5x-x+2 x^2-6x+2 (I understand how they got 8(difference btw 10 & 2.But,it confuses because the question is asking for the value of x^2-6x+10 so how do I make the connection with x^2-6...

by shanice

Fri Aug 10, 2012 11:06 pm
Forum: Problem Solving
Topic: EZ Solutions - Advanced Workbook
Replies: 3
Views: 1097

#### Source - EZ Solutions-Advanced Workbook

###### Problem Solving

Got it. Thank you very much.

by shanice

Fri Aug 10, 2012 10:42 pm
Forum: Problem Solving
Topic: Source - EZ Solutions-Advanced Workbook
Replies: 13
Views: 1536

#### Source - GMATprep

##### Source - GMATprep

If y=4+(x-3)^2, then y is least when x

A)14
B)13
C)0
D)3
E)4

I don't understand what the question is asking. Can someone explain, please?

by shanice

Fri Aug 10, 2012 7:34 am
Forum: Problem Solving
Topic: Source - GMATprep
Replies: 3
Views: 4081

#### Source - EZ Solutions-Advanced Workbook

###### Problem Solving

Hi GMATGuruNY,

Thank you very much, Sir. I understand the usage of x>49 in this question now. That's an easier way to solve the question.

By the way, without using "x > 49" how can I eliminate the square root?

by shanice

Fri Aug 10, 2012 7:27 am
Forum: Problem Solving
Topic: Source - EZ Solutions-Advanced Workbook
Replies: 13
Views: 1536

#### OG-2nd Edition - Question 114 & 134

###### Problem Solving

Hi Mr.Anurag, Let the total weekly sales = $S (here both salespersons A and B earn the same amount) Then 360 + 6% of (S - 1000) = 8% of S 360 + 0.06(S - 1000) = 0.08S 360 + 0.06S - 60 = 0.08S 0.02S = 300 S =$15,000 The correct answer is C As per your workings, why can't 360 + 6% of (S + 1000) = 8% ...

by shanice

Fri Aug 10, 2012 12:38 am
Forum: Problem Solving
Topic: OG-2nd Edition - Question 114 & 134
Replies: 6
Views: 2597

#### Source - EZ Solutions-Advanced Workbook

###### Problem Solving

Hi eagleeye, I'm having problem with one of the questions that you solved for me on 28th July.It's question 1.Below is the question together with your workings:- 1)(x-5âˆšx-14) /(âˆšx-7) To make the question easier to solve, since x is under sqrt, let sqrt(x) = a. Then, x = a^2. Now, the expression ...

by shanice

Fri Aug 10, 2012 12:24 am
Forum: Problem Solving
Topic: Source - EZ Solutions-Advanced Workbook
Replies: 13
Views: 1536

#### Source - How To Pass The Gmat - Question 34

###### Problem Solving

Understood,kashishh.

Thank you very much.

by shanice

Tue Aug 07, 2012 9:44 pm
Forum: Problem Solving
Topic: Source - How To Pass The Gmat - Question 34
Replies: 2
Views: 651

#### Source - How To Pass The Gmat - Question 34

##### Source - How To Pass The Gmat - Question 34

Can anyone understand the below question

The function *x returns the value of the highest integer smaller than x.What is *4 times*2.5?

A)10
B)8
C)6
D)7.5
E)4