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

A is only correct if the numbers are consecutive, but it doesn't say that.

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

work = work
m*m*m=k*k*x
x=m^3/k^2

by griscomtestprep

Tue Feb 17, 2009 12:17 am
Forum: Problem Solving
Topic: Work - m machines
Replies: 5
Views: 1649