Search found 110 matches
To Anurag@Gurome & 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:...
- by shanice
Wed Aug 15, 2012 6:59 pm- Forum: Problem Solving
- Topic: Population problem
- Replies: 6
- Views: 1653
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: 1020
- by shanice
Wed Aug 15, 2012 10:12 am- Forum: Problem Solving
- Topic: Population problem
- Replies: 6
- Views: 1653
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
Thank you in advance.
- by shanice
Wed Aug 15, 2012 7:04 am- Forum: Problem Solving
- Topic: Population problem
- Replies: 6
- Views: 1653
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: 794
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: 1280
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: 1254
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...
- by shanice
Fri Aug 10, 2012 11:06 pm- Forum: Problem Solving
- Topic: EZ Solutions - Advanced Workbook
- Replies: 3
- Views: 1280
- by shanice
Fri Aug 10, 2012 10:42 pm- Forum: Problem Solving
- Topic: Source - EZ Solutions-Advanced Workbook
- Replies: 13
- Views: 2042
Source - GMATprep
If y=4+(x-3)^2, then y is least when x
A)14
B)13
C)0
D)3
E)4
Answer is D.
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: 4359
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?
Thank you in advance.
- by shanice
Fri Aug 10, 2012 7:27 am- Forum: Problem Solving
- Topic: Source - EZ Solutions-Advanced Workbook
- Replies: 13
- Views: 2042
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: 2953
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-5√x-14) /(√x-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: 2042
- by shanice
Tue Aug 07, 2012 9:44 pm- Forum: Problem Solving
- Topic: Source - How To Pass The Gmat - Question 34
- Replies: 2
- Views: 875
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
Answer is C.
- by shanice
Mon Aug 06, 2012 9:40 pm- Forum: Problem Solving
- Topic: Source - How To Pass The Gmat - Question 34
- Replies: 2
- Views: 875