Search found 27 matches
Re: Work rate combination problem
Each of 10 machines works at a constant rate. When working together the amount of time it takes to complete a job is 16 hrs. How many hours will it take to complete the same job if only 8 machines work together? 18 20 22 24 26 Since there are 8/10 of the machines, it is going to take 10/8 as long. ...
- by griscomtestprep
Wed Feb 18, 2009 12:23 am- Forum: Problem Solving
- Topic: Work rate combination problem
- Replies: 7
- Views: 4783
- by griscomtestprep
Tue Feb 17, 2009 11:40 pm- Forum: Data Sufficiency
- Topic: odd /even ? on a set of number !!!
- Replies: 14
- Views: 4639
Re: HELP : Hard Question!
“But I don’t have time for school”, Eddie complained to the truant officer. “I sleep 8 hours a day, which adds up to 122 days a year, there is no school on Saturdays and Sundays, which amounts to 104 days a year. We have 60 days of summer vacation. I need three hours a day for meals – that is more ...
- by griscomtestprep
Tue Feb 17, 2009 11:33 pm- Forum: GMAT Math
- Topic: HELP : Hard Question!
- Replies: 1
- Views: 1368
- by griscomtestprep
Tue Feb 17, 2009 11:26 pm- Forum: GMAT Math
- Topic: Comprehensive Toolbox for Work Problems
- Replies: 5
- Views: 2656
Comprehensive List of Idioms
Attached is the chapter on idioms from my GMAT manual. It contains a comprehensive list of idioms.
Cheers,
Britt
- by griscomtestprep
Tue Feb 17, 2009 11:16 pm- Forum: Sentence Correction
- Topic: Comprehensive List of Idioms
- Replies: 1
- Views: 13590
Comprehensive Toolbox for Rate Problems
Attached is the Rate chapter of my GMAT manual. It gives you a comprehensive set of tools for attacking rate problems.
Cheers,
Britt
- by griscomtestprep
Tue Feb 17, 2009 11:11 pm- Forum: GMAT Math
- Topic: Comprehensive Toolbox for Rate Problems
- Replies: 0
- Views: 2046
Comprehensive Toolbox for Work Problems
Attached is the chapter in my manual on work problems. It's fairly comprehensive and gives you many different tools to attack the problems with.
Cheers,
Britt
Edit: I've also added it as a word doc.
- by griscomtestprep
Tue Feb 17, 2009 3:11 pm- Forum: GMAT Math
- Topic: Comprehensive Toolbox for Work Problems
- Replies: 5
- Views: 2656
Folks, here is the next question If a,b and c are real numbers such that a^2 + 2b =7, b^2 + 4c = -7 and c^2 + 6a = -14, find the value of a^2 + b^2 + c^2 A. 14 B. 16 C. 21 D. 28 E. 35 OA: A Add them up and complete the square: a^2+6a+b^2+2b+c^2+4c=-14 (a^2+6a+9)+(b^2+2b+1)+(c^2+4c+4)=-14+9+1+4=0 (a...
- by griscomtestprep
Tue Feb 17, 2009 12:15 pm- Forum: Problem Solving
- Topic: Problem Solving for 780+ Aspirants.
- Replies: 209
- Views: 63596
Re: Provide more...
The pioneering research of Lewis Latimer and Thomas Edison, who became known for his invention of the light bulb, accelerated the development of the first power plant, which opened in New York City in 1882. A. of Lewis Latimer and Thomas Edison, who became known for his invention of the light bulb,...
- by griscomtestprep
Tue Feb 17, 2009 10:33 am- Forum: Sentence Correction
- Topic: What's wrong with this sentence?
- Replies: 8
- Views: 3521
Re: The use of "should"
It is expected that the advances in the production of high-temperature superconductors should increase the viability of so-called "maglev" trains that float on magnetic fields. I know that "will" is a better choice, but why is "should" wrong? It's redundant. You either...
- by griscomtestprep
Tue Feb 17, 2009 1:10 am- Forum: Sentence Correction
- Topic: The use of "should"
- Replies: 1
- Views: 1515
Re: GMAT PREP (Distance & Rate)
Did it take Pei more than 2 hours to walk a distance of 10 miles along a certain trail? (1 mile = 1.6 kilometers) (1) Pei walked this distance at an average rate of less than 6.4 kilomters per hour. (2) On average, it took Pei more than 9 minutes per kilometer to walk this distance. Can someone ple...
- by griscomtestprep
Tue Feb 17, 2009 1:02 am- Forum: Data Sufficiency
- Topic: GMAT PREP (Distance & Rate)
- Replies: 3
- Views: 2113
- by griscomtestprep
Tue Feb 17, 2009 12:17 am- Forum: Problem Solving
- Topic: Work - m machines
- Replies: 5
- Views: 1649