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
I have no clue on these two questions PLEASE HELP!!!
sq root 10 + 3 sq root x = sq root x
How can you solve
x + sq root x = 20
- 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
- by vladmire
Tue Feb 03, 2009 5:53 pm- Forum: Problem Solving
- Topic: HELP Quadratic formula NOOOOOOOO
- Replies: 2
- Views: 1238
- by vladmire
Tue Feb 03, 2009 5:52 pm- Forum: Problem Solving
- Topic: solve for x
- Replies: 2
- Views: 1114
- 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