Search found 132 matches


ratios

How is it that if the ratio of men to women is 2/5 that the total student body of men would be 2/7 and the for women total it would be 5/7.
How do I come up with the ratio as a total?

by vladmire

Sun Feb 22, 2009 5:11 pm
Forum: Problem Solving
Topic: ratios
Replies: 1
Views: 1161

Clarissa needs 10 hours to complete the job by herself and Shawna needs 15 hours to complete the job by herself In this case needs only Carissa at 10hrs. and Shawna at 15hrs to paint the house alone. Would put them working together to complete the painting of the house in 1 day and a hour, but the ...

by vladmire

Wed Feb 18, 2009 7:07 am
Forum: Problem Solving
Topic: Work Problem
Replies: 3
Views: 2442

Work Problem

Whats the next step I know the formula is 1/t1 + 1/t2 = 1/t t=total hours or days I guess of both people working. Clarissa and Shawna working together can paint the exterior of a house in 6 days. Clarissa by herself can complete this job in 5 days less than Shawna. How long will it take Clarissa to ...

by vladmire

Wed Feb 18, 2009 6:30 am
Forum: Problem Solving
Topic: Work Problem
Replies: 3
Views: 2442

Gmatprep

I can't seem to figure out how to statement 2 is sufficient,
I don't know if x is positive or negative.
I know I need to rearrange the question stem but to what?

by vladmire

Tue Feb 10, 2009 12:02 pm
Forum: Data Sufficiency
Topic: Gmatprep
Replies: 1
Views: 1188

factoring

So I'm suppose so solve for the equation. I see that I can factor a 5 out to get 5(x-y-z)=10, but how do I get the 5 to the other side divide right?

What is the value of xn – ny – nz?

1.x – y – z = 10
2.n = 5


a.1
b.2
c.both
d.each alone
e. neither

by vladmire

Sun Feb 08, 2009 6:23 am
Forum: Data Sufficiency
Topic: factoring
Replies: 1
Views: 1321

ratios

Whats the easiest way to figure out problems that involve miles, kilometers, inches, ft, and such like when the problem says There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile? I'm given plently of information. I think hey I'll set up a ratio and end up with the ...

by vladmire

Fri Feb 06, 2009 11:15 am
Forum: Problem Solving
Topic: ratios
Replies: 1
Views: 1217
by vladmire

Tue Feb 03, 2009 5:55 pm
Forum: Problem Solving
Topic: I have no clue on these two questions PLEASE HELP!!!
Replies: 1
Views: 985
by vladmire

Tue Feb 03, 2009 5:53 pm
Forum: Problem Solving
Topic: a+bi form
Replies: 1
Views: 1001

solve for x

x+1/x^2+2x - x+4/x^2+x = -3/x^2+3x+2

by vladmire

Tue Feb 03, 2009 5:52 pm
Forum: Problem Solving
Topic: solve for x
Replies: 2
Views: 1114

Solve for x

8x+5/10x-7 = 4x-3/5x+7

by vladmire

Tue Feb 03, 2009 5:49 pm
Forum: Problem Solving
Topic: Solve for x
Replies: 1
Views: 1079

Re: OG11-Q220

before the transfer of y dollars .. the hourly pay of john and mary are x/10 and x/8 ... once the transfer of y dollars is made the hourly wages for john and and mary are (x+y)/10 and (x-y)/8 ... now these both are equal ... so ... (x+y)/10= (x-y)/8 .... solve the equation and u have x = 9y ... hen...

by vladmire

Tue Feb 03, 2009 5:37 pm
Forum: Problem Solving
Topic: OG11-Q220
Replies: 5
Views: 1703
by vladmire

Tue Feb 03, 2009 3:41 pm
Forum: Problem Solving
Topic: How do you solve
Replies: 3
Views: 1214

O.G. variable.

whats the quickest way to solve question number 225 on page 183 of the OG.11. (x+1/x-1)^2. if x is replaced by 1/x everywhere in the expression above, then the resulting expression is equivalent to a. (x+1/x-1)^2 b.(x-1/x+1)^2 c. x^2+1/1-x^2 d. x^2-1/x^2+1 e. -(x-1/x+1)^2 My problem lies in basics I...

by vladmire

Mon Feb 02, 2009 4:39 pm
Forum: Problem Solving
Topic: O.G. variable.
Replies: 1
Views: 1377

P.S.

If I have a problem such as 6z+7/4z+1=3z+8/2z-4.
How do I solve for the variable can I cross multiply terms and then simplify or is there a better method?

by vladmire

Sun Feb 01, 2009 5:31 pm
Forum: Problem Solving
Topic: P.S.
Replies: 1
Views: 1295