Search found 13 matches
R*T = D T = 30min = 30 * 60 seconds = 1800 seconds The question askes if D > 6 miles (= 6*5280 feet) Calculate the rate for 6miles in 30minutes. R = D/T R = 6*5280/1800 = 5280 / 300 = 17.6 If his rate was > 17.6, he would have walked a longer way and therefore the distance would be > 6 miles. If his...
- by briantime
Wed Oct 21, 2009 11:45 pm- Forum: Data Sufficiency
- Topic: Carlos
- Replies: 1
- Views: 1722
[15 * 3 * (22-x)/100] + [18 * 2 * x/100] = 9uttam.albela wrote:[15 * 3 * (22-x)/100] + [18 * 4 * x/100] = 9
- by briantime
Wed Oct 21, 2009 11:32 pm- Forum: Problem Solving
- Topic: Simple question re discounts
- Replies: 5
- Views: 1094
Thanks for the reply. I didn't time myself, which is probably half the problem. I ran out of time and had to guess on the final six problems of the quant. section. Also, I froze on the first question and ended up guessing. The other questions I felt pretty confident on though. I had all the triangl...
- by briantime
Wed Oct 21, 2009 9:55 pm- Forum: I just Beat The GMAT!
- Topic: Poor score, any tips on how to raise it?
- Replies: 6
- Views: 3456
The most important information is that the members of club M did not join any other club. This gives you the information that 0 members join M & S, M & Z and M & S & Z.
- by briantime
Wed Oct 21, 2009 1:59 pm- Forum: Problem Solving
- Topic: Difficult Math Problem #93 - Sets
- Replies: 7
- Views: 3379
Re: confused
I am a little lost. I do not understand the shortcuts made here. Such as, "7c3". Where does the 7 and 3 come from and also what does "c" stand for? and = 1*1*7c3/9c5, if someone could break down where the 9 and 5 come from. 9c5: This means that 5 out of 9 people are to be chosen...
- by briantime
Wed Oct 21, 2009 1:44 pm- Forum: Problem Solving
- Topic: Probability
- Replies: 5
- Views: 1413
- by briantime
Wed Oct 21, 2009 1:27 pm- Forum: Problem Solving
- Topic: Difficult Math Problem #93 - Sets
- Replies: 7
- Views: 3379
Did you time yourself while solving the OG-12 questions? Why do you think did freeze and forget everything? Were you too nervous? Was it the test-center environment? Burn-out? Not enough sleep? Make sure to get confident in solving basic quantitive problems. Also, make sure you understand the princi...
- by briantime
Wed Oct 21, 2009 1:13 pm- Forum: I just Beat The GMAT!
- Topic: Poor score, any tips on how to raise it?
- Replies: 6
- Views: 3456
- by briantime
Wed Oct 21, 2009 12:34 pm- Forum: Problem Solving
- Topic: P.S Coordinate Geometry
- Replies: 6
- Views: 2065
Slope: 4/3 You can get the length ratios by just using random numbers if you are unsure: x = 3: f(x) = 4/3x + b (b doesn't matter here, so just dismiss it) f(3) = (4/3)*3 = 4 Coords of B: (3,4) x = 6: f(6) = (4/3)*6 = 8 Coords of A: (6, 8) Therefore: Length of BC: 6-3 = 3 Length of AC: 8-4 = 4 We ha...
- by briantime
Wed Oct 21, 2009 12:32 pm- Forum: Problem Solving
- Topic: P.S Coordinate Geometry
- Replies: 6
- Views: 2065
Re: Simple question re discounts
Hi caspermonday, We are given the following: f = price for fox jeans = 15 p = price for pony jeans = 18 x = discount for fox jeans in percent y = discount for pony jeans in percent x + y = 22 or: x = 22 - y As a fraction: x/100 + y/100 = 22/100 From the information we can derive: 3*(15-(x/100)*15) +...
- by briantime
Wed Oct 21, 2009 12:16 pm- Forum: Problem Solving
- Topic: Simple question re discounts
- Replies: 5
- Views: 1094
We know that 5 pieces are on average 124cm long. This means all peaces together are 5*124 = 620cm long. The median is 140cm. In a sequence: w, x, 140, y, z We want w(the shortest piece of wood) to be as long as possible. Therefore, the values of the other variables should be as low as possible. The ...
- by briantime
Mon Oct 19, 2009 3:01 am- Forum: Problem Solving
- Topic: GMATPrep Qn.
- Replies: 3
- Views: 1536
In the figure shown, the length of line segment QS is 4 sqrt(3). What is the perimeter of equilateral triangle PQR? - 12 - 12 sqrt(3) - 24 - 24 sqrt(3) - 48 Since we have an equilateral triangle, the angles are all equal (60°). Angle QPS = 60 Angle QSP = 90 Therefore, PQS = 180 - 60 - 90 = 30 OR P...
- by briantime
Sun Oct 18, 2009 5:37 am- Forum: Problem Solving
- Topic: GMATprep: geometry
- Replies: 6
- Views: 5629
Is 4 1/9 correct?VP_RedSoxFan wrote:In your example, 9/2 = 4 R1 is really 4 1/9.
I would think it is 4+1/2.
Another example:
5/2 = 2 R: 1 = 2.5 = 2+1/2
Am I confusing something?
- by briantime
Sun Oct 18, 2009 3:44 am- Forum: Problem Solving
- Topic: Which of the folowing is equal to N?
- Replies: 4
- Views: 4916