Search found 46 matches
- by Tame the CAT
Tue May 08, 2007 6:56 pm- Forum: Problem Solving
- Topic: exponents
- Replies: 5
- Views: 2144
The cost from increases by 5 cents per year so the setup is pretty easy
10x+10(x+5)+10(x+10)+10(x+15)+10(x+20) = 3500
50x+500 = 3500
x=60 <---- cost in 1998
so A must be the answer.
- by Tame the CAT
Mon May 07, 2007 6:55 pm- Forum: Problem Solving
- Topic: stamp question
- Replies: 4
- Views: 2351
Pretty Tough Question - Need some help
A certain league has four divisions. The respective divisions had 9, 10, 11, and 12 teams qualify for the playoffs. Each division held its own double-elimination tournament -- where a team is eliminated from the tournament upon losing two games -- in order to determine its champion. The four divisio...
- by Tame the CAT
Mon May 07, 2007 11:52 am- Forum: Problem Solving
- Topic: Pretty Tough Question - Need some help
- Replies: 1
- Views: 1361
For an equilateral triangle always remember that the Area of the Incircle = 1/12*pie*(a^2) Likewise for an equilateral triangle the Area of the Circumcircle = 1/3*pie*(a^2); Where a is the side of the triangle. Hence in this case the area would be 1/12*pie*10^2 =25pie/3 Do you want additional help ...
- by Tame the CAT
Sun May 06, 2007 6:16 pm- Forum: Problem Solving
- Topic: prep question
- Replies: 3
- Views: 1762
284 rounds down (to the nearest 10) to 280, not 290
The range of miles per gallon would be
285/12.4 (the smallest possible number) to . . .
294/11.5 (the largest possible number
What are the choices??
- by Tame the CAT
Sun May 06, 2007 6:05 pm- Forum: Problem Solving
- Topic: seemingly simple rounding question
- Replies: 4
- Views: 2881
- by Tame the CAT
Fri Apr 27, 2007 8:11 am- Forum: Problem Solving
- Topic: Interest - Very Difficult!!
- Replies: 2
- Views: 1812
Probability
John and Peter are among the nine players a basketball coach can choose from to field a five-player team. If all five players are chosen at random, what is the probability of choosing a team that includes John and Peter?
A 1/9
B 1/6
C 2/9
D 5/18
E 1/3
- by Tame the CAT
Fri Apr 27, 2007 5:16 am- Forum: Problem Solving
- Topic: Probability
- Replies: 4
- Views: 2328
Interest - Very Difficult!!
An investor purchased a share of non-dividend-paying stock for p dollars on Monday. For a certain number of days, the value of the share increased by r percent per day. After this period of constant increase, the value of the share decreased the next day by q dollars and the investor decided to sell...
- by Tame the CAT
Fri Apr 27, 2007 4:40 am- Forum: Problem Solving
- Topic: Interest - Very Difficult!!
- Replies: 2
- Views: 1812
- by Tame the CAT
Fri Apr 27, 2007 2:31 am- Forum: Problem Solving
- Topic: Very tough Probability Question
- Replies: 6
- Views: 4309
This problem is insane!!
Not sure how to attack this problem Eighty percent of the lights at Hotel California are on at 8 p.m. a certain evening. However, forty percent of the lights that are supposed to be off are actually on and ten percent of the lights that are supposed to be on are actually off. What percent of the lig...
- by Tame the CAT
Thu Apr 26, 2007 5:35 pm- Forum: Problem Solving
- Topic: This problem is insane!!
- Replies: 5
- Views: 2102
- by Tame the CAT
Thu Apr 26, 2007 5:29 pm- Forum: Problem Solving
- Topic: Very tough Probability Question
- Replies: 6
- Views: 4309
Here is the official solution. Sorry, I should have posted it. Someone pm-ed me. I should be more considerate for the others studying. Also look at the attachment ----------- According to the question, the ratio of the lengths of arc AC to arc AB to arc BC is 6: 2: 1. An inscribed angle cuts off an ...
- by Tame the CAT
Thu Apr 26, 2007 1:03 pm- Forum: Problem Solving
- Topic: Geometry
- Replies: 11
- Views: 4924
Very tough Probability Question
If a jury of 12 people is to be selected randomly from a pool of 15 potential jurors, and the jury pool consists of 2/3 men and 1/3 women, what is the probability that the jury will comprise at least 2/3 men?
A 24/91
B 45/91
C 2/3
D 67/91
E 84/91
- by Tame the CAT
Thu Apr 26, 2007 1:00 pm- Forum: Problem Solving
- Topic: Very tough Probability Question
- Replies: 6
- Views: 4309
- by Tame the CAT
Wed Apr 25, 2007 3:31 pm- Forum: Problem Solving
- Topic: Geometry
- Replies: 11
- Views: 4924
Geometry
The length of minor arc AB is twice the length of minor arc BC and the length of minor arc AC is three times the length of minor arc AB. What is the measure of angle BCA? 20 40 60 80 120 I don't know the answer yet, but whatever I'm getting isn't one of the answer choices. BTW. Triangle ABC is inscr...
- by Tame the CAT
Wed Apr 25, 2007 3:21 pm- Forum: Problem Solving
- Topic: Geometry
- Replies: 11
- Views: 4924