Search found 118 matches
- by ccassel
Fri Apr 22, 2011 8:16 am- Forum: Data Sufficiency
- Topic: a data from gmatclub
- Replies: 5
- Views: 1112
- by ccassel
Fri Apr 22, 2011 7:49 am- Forum: Data Sufficiency
- Topic: a data from gmatclub
- Replies: 5
- Views: 1112
- by ccassel
Fri Apr 22, 2011 7:00 am- Forum: Problem Solving
- Topic: ps - x + y and xy
- Replies: 12
- Views: 1338
- by ccassel
Wed Apr 20, 2011 10:34 am- Forum: Problem Solving
- Topic: ps - x + y and xy
- Replies: 12
- Views: 1338
Sorry for the missing piece of information. The shaded region is the area between the small triangle and large triangle - ie. inside the large, and outside the small. I have edited the queston.
Cheers,
- by ccassel
Wed Apr 20, 2011 8:10 am- Forum: Problem Solving
- Topic: ps - square in square
- Replies: 7
- Views: 1426
I see now. Would combining 2 equations like this be a regular practice on the GMAT? Is there a rule to follow? I am not a math major so performing this type of function is foreign to me. I usually plug in numbers but would like to understand short-cuts when good numbers are not available. Thanks aga...
- by ccassel
Wed Apr 20, 2011 7:56 am- Forum: Problem Solving
- Topic: ps - x + y and xy
- Replies: 12
- Views: 1338
Anurag, can you elaborate on your method?
How can you assume 1/x + 1/y = (y + x)/xy?
Thanks in advance.
- by ccassel
Wed Apr 20, 2011 7:38 am- Forum: Problem Solving
- Topic: ps - x + y and xy
- Replies: 12
- Views: 1338
ps - x + y and xy
If x + y = 5 and xy = 6, then 1/x + 1/y =?
A. 1/6
B. 1/5
C. 5/6
D. 6/5
E. 5
Answer is C
- by ccassel
Tue Apr 19, 2011 3:06 pm- Forum: Problem Solving
- Topic: ps - x + y and xy
- Replies: 12
- Views: 1338
ps - capacity
How would you solve this question?
Four cups of milk are to be poured into a 2-cup bottle and a 4-cup bottle. If each bottle is to be filled to the same fraction of its capacity, how many cups of milk should be poured into the 4-cup bottle?
A. 2/3
B. 7/3
C. 5/2
D. 8/3
E. 3
Answer is D
- by ccassel
Tue Apr 19, 2011 2:55 pm- Forum: Problem Solving
- Topic: ps - capacity
- Replies: 4
- Views: 1069
ps - square in square
I solved this correctly by plugging in good numbers but how would you solve it without plugging in? It took me too much time. The triangels in a figure (a small triangle in a large triangle not necessarily touching sides) are equilateral and the ratio of the length of a side of the larger triangle t...
- by ccassel
Tue Apr 19, 2011 2:44 pm- Forum: Problem Solving
- Topic: ps - square in square
- Replies: 7
- Views: 1426
To expand on your answer...no new lines are created (only subtracted) therefore, the entire perimiter of the triangle will be subtracted from the entire perimeter of the square.
- by ccassel
Tue Apr 19, 2011 2:08 pm- Forum: Problem Solving
- Topic: ps - geometry
- Replies: 2
- Views: 936
ps - geometry
How would you solve this problem? In a figure, two rectangles with the same dimensions overlap to form a shaded region (right angle triangle). If each rectangle alone has perimeter 12 and the shaded region has perimeter 3, what is the total length of the outside perimeter of the new shape? A. 15 B. ...
- by ccassel
Tue Apr 19, 2011 12:13 pm- Forum: Problem Solving
- Topic: ps - geometry
- Replies: 2
- Views: 936
Total alcohol/Total Solution = % Alcohol in Solution. (Diagram helps enormously!)
Great solutions! Thanks for the tips.
Cheers,
- by ccassel
Tue Apr 19, 2011 12:04 pm- Forum: Problem Solving
- Topic: ps - mixture
- Replies: 6
- Views: 1565
Are these 2 different ways of solving the question?
What equations are you working from?
Thanks in advance.
Cheers,
- by ccassel
Tue Apr 19, 2011 8:56 am- Forum: Problem Solving
- Topic: ps - mixture
- Replies: 6
- Views: 1565
ps - quadratic root q
How would you explain the answer to this question?
If one root of the equation 2x^2+3x-k=0 is 6, what is the value of k?
A. 90
B. 42
C. 18
D. 10
E. -10
Answer is A
- by ccassel
Mon Apr 18, 2011 5:54 pm- Forum: Problem Solving
- Topic: ps - quadratic root q
- Replies: 3
- Views: 884