Search found 13 matches
DS Question help!
If x is negative, is x <-3?
1) x^2 > 9
2) x^3 < -9
When I solve 1) I get -3 < x & 3 < x, which means x is great than -3, i.e. Anwser A. Is my thinking correct here?
- by dqure040
Tue Dec 01, 2015 7:55 pm- Forum: Data Sufficiency
- Topic: DS Question help!
- Replies: 10
- Views: 3889
CR Help - Strengthen Q 2
Astronomer: Most stars are born in groups of thousands, each star in a group forming from the same parent cloud of gas. Each cloud has a unique, homogeneous chemical composition. Therefore, whenever to stars have the same chemical composition as each other, they must have originated from the same cl...
- by dqure040
Tue Nov 17, 2015 3:02 pm- Forum: Critical Reasoning
- Topic: CR Help - Strengthen Q 2
- Replies: 3
- Views: 4422
CR Help - Strengthen Question
Between 1980 and 2000 sea otter population of the Aleutian Islands declined precipitously. There were no signs of disease or malnutrition, so there was probably an increase in the number of otters being eat by predators. Orcas will eat otters when seals, their normal prey, are unavailable, and the A...
- by dqure040
Tue Nov 17, 2015 2:57 pm- Forum: Critical Reasoning
- Topic: CR Help - Strengthen Question
- Replies: 1
- Views: 1288
Assumption CR Question
Hey Team, could really use help understanding why the answer is the correct answer? I'm missing a link. Art historian: Successful forgeries tend to be those most recently painted. While such a phenomenon may sound counterintuitive, a forger is able to exploit current modes of aesthetics to create pa...
- by dqure040
Wed Nov 11, 2015 6:59 pm- Forum: Critical Reasoning
- Topic: Assumption CR Question
- Replies: 1
- Views: 1401
PS Question help please!
For any positive integer n, the sum of the first n positive integers equal n(n+10)/2. What is the sum of all even integers between 99 and 301?
a) 10,100 b)20,200 c)22,650 d)40,200 e)45,150
Could use some help here.
- by dqure040
Wed Nov 04, 2015 7:52 pm- Forum: Problem Solving
- Topic: PS Question help please!
- Replies: 4
- Views: 1211
Hey, to me "C" says "ineffective meddling" which means the "the act of meddling is ineffective" where as the passage is trying to convey the speed limit is ineffective and meddlesomeblaster wrote:stuck between C and E . can someone give justification to E and why C is wrong?
- by dqure040
Sat Oct 24, 2015 11:14 am- Forum: Sentence Correction
- Topic: Speed limit - long one!
- Replies: 282
- Views: 109928
- by dqure040
Thu Oct 22, 2015 1:56 pm- Forum: Problem Solving
- Topic: PS question - help please
- Replies: 3
- Views: 1303
PS question - help please
Company P had 15% more employees in December than it had in Jan. If company P had 460 employees in December, how many employees did it have in Jan? A 391, B 400, c 410, D 423, E 423 Solution: D = 1.15J, J= D/1.15, 460/1.15=400 BUT MY QUESTION IS WHY IS THE FOLLOWING WRONG? J=0.85D, => 0.85*(460) = 3...
- by dqure040
Thu Oct 22, 2015 1:11 pm- Forum: Problem Solving
- Topic: PS question - help please
- Replies: 3
- Views: 1303
Hi Rich, that's the part I'm having difficulty "visualizing" I understand the 2 ratios, but get to the final ratio with 2 unknowns is my issue. Filling in numbers, I can see how the solution came to be, but with expressions I can't see it. Normally I'm better with equations, but i guess ra...
- by dqure040
Thu Oct 22, 2015 10:25 am- Forum: Problem Solving
- Topic: PS problem! please help
- Replies: 4
- Views: 1260
PS problem! please help
At a loading dock, each worker on the night crew loaded 3/4 as many boxes as each worker on the day crew. If the night crew has 4/5 as many workers as the day crew, what fraction of all the boxes loaded by the 2 crews did the day crew load? a) 1/2, b) 2/5, C) 3/5 d) 9/5 E) 5/8 I'm having a hard time...
- by dqure040
Thu Oct 22, 2015 7:50 am- Forum: Problem Solving
- Topic: PS problem! please help
- Replies: 4
- Views: 1260
Coordinate Geometry - Help
I do not understand the OG explanation to this problem, please help: In the xy-plane, the points (c,d), (c, -d) & (-c, -d) are 3 vertices of a certain square. If c<0 and d>0, which of the following points is in the same quadrant as the fourth vertex of the square? A.(-5,-3) B.(-5,3) C.(5,-3) D.(...
- by dqure040
Wed Oct 14, 2015 6:24 pm- Forum: Problem Solving
- Topic: Coordinate Geometry - Help
- Replies: 2
- Views: 1405
Hi Rich!
So that's a clear mistake, thanks for that. BUT my question is more, what is the difference between
x/6 = 5-x/2 (which gives the correct answer) and x/2=5-x/6 (which gives the incorrect answer).
Help.
- by dqure040
Tue Sep 29, 2015 7:57 pm- Forum: Problem Solving
- Topic: Need help understanding a Ratio Problem
- Replies: 5
- Views: 3503
Need help understanding a Ratio Problem
A total of 5 liters of gasoline is to be poured into two empty containers with capacities of 2 liters and 6 liters, respectively, such that both containers will be filled to the same percent of their respective capacities. What amount of gasoline, in L, must be poured into the 6-L container? My ques...
- by dqure040
Tue Sep 29, 2015 12:43 pm- Forum: Problem Solving
- Topic: Need help understanding a Ratio Problem
- Replies: 5
- Views: 3503