Search found 24 matches
Brent!
Can you please explain why you took the individual rate of Karen of 6/150min and applied it to the combined rate to find Karin`s output in 25 min? Why you did not do the below
Karin prep 6 in 150
then she prep X in 25
150x=150
x=1
What did I do wrong here?
- by Zoser
Wed Feb 22, 2017 8:52 am- Forum: Problem Solving
- Topic: twice as many omelettes
- Replies: 13
- Views: 6886
Statement 1: Car X is traveling at 50 miles per hour and car Y is traveling at 40 miles per hour. Notice that we could easily duplicate this scenario in real life. Start with Car X 1 mile ahead of car Y (given info) Have Car X drive at 50 mph and car Y at 40mph. Use a stopwatch to time how long it ...
- by Zoser
Wed Feb 22, 2017 7:59 am- Forum: Data Sufficiency
- Topic: Cars X and Y speeds
- Replies: 6
- Views: 3975
Can you please explain how you get rid of D in the last step?= (d + d + d)/(d/x + d/y + d/z) = (3d)/(dyz + dxz + dyx)/(xyz)
= (3xyz)/(yz + xz + yx)
Thanks
- by Zoser
Fri Feb 17, 2017 6:42 pm- Forum: Problem Solving
- Topic: High 700 level rate problem, any1 got good advice for such..
- Replies: 11
- Views: 8395
If the box that has (1/12)N students in it represents the students with a degree in applied sciences and graduated from a northeastern school, then the remaining boxes (shaded in blue) must represent the students who did not both receive a degree in the applied sciences and graduate from a school i...
- by Zoser
Wed Feb 08, 2017 1:13 pm- Forum: Problem Solving
- Topic: Overlapping sets question
- Replies: 13
- Views: 8641
If the box that has (1/12)N students in it represents the students with a degree in applied sciences and graduated from a northeastern school, then the remaining boxes (shaded in blue) must represent the students who did not both receive a degree in the applied sciences and graduate from a school i...
- by Zoser
Wed Feb 08, 2017 11:11 am- Forum: Problem Solving
- Topic: Overlapping sets question
- Replies: 13
- Views: 8641
Thank you! I started studying a month ago and what you said is totally trueYou're in good company Smile Just remember that the killer on the GMAT isn't the high-level stuff. It's the careless mistakes and the questions engineered to look much harder than they are.
- by Zoser
Tue Jan 17, 2017 9:21 am- Forum: Data Sufficiency
- Topic: Inequalities If zt < -3, is z < 4
- Replies: 9
- Views: 6570
[/quote]Here's where you went wrong: For zt<-3 z MUST be positive and less than 4 as t is less than -4
If t = -5 ad z = 10, tz would be less than -3, right?
You are right! Most certainly, too much studying start affecting my basic math skills.
Thanks anyways
- by Zoser
Tue Jan 17, 2017 7:04 am- Forum: Data Sufficiency
- Topic: Inequalities If zt < -3, is z < 4
- Replies: 9
- Views: 6570
I think the answer is B and this is my approach: In the question we know that zt<-3 which means either z or t is negative and the other is positive Statement 2 mentions that t<-4 which means that t is always negative and so we know that z is positive here. For zt<-3 z MUST be positive and less than ...
- by Zoser
Tue Jan 17, 2017 6:42 am- Forum: Data Sufficiency
- Topic: Inequalities If zt < -3, is z < 4
- Replies: 9
- Views: 6570
I think the answer is "C" for this reason:
We got either y=2 and as though x=4
or
Y=-1 and as though x=-8
In case Y=-1 and x=-8 we go back the the formula xy=8
so -8*-1=8
which is correct and x has to be -8 and thus Answer is "C"
What is wrong with my approach?
Thanks
- by Zoser
Mon Jan 16, 2017 6:34 pm- Forum: Data Sufficiency
- Topic: Quadratics
- Replies: 11
- Views: 6930