Search found 7 matches
We are given:
total sample (T) = 1200
total like dramatic (D) = 0.64 (T)
female that like dramatic (Df) = 0.74(f)
However, because we do not know the ratio of male to female, there is no way to know how much female like comedy.
- by Iakgmat
Fri Dec 07, 2018 4:56 pm- Forum: Data Sufficiency
- Topic: In a certain survey, 1,200 people were asked which the
- Replies: 1
- Views: 477
- by Iakgmat
Fri Dec 07, 2018 4:52 pm- Forum: Data Sufficiency
- Topic: CHALLENGE: What is the value of k?
- Replies: 1
- Views: 443
First add up all the ratios 2:3:4 = 9. Since a triangle has 180 degrees, that is a factor of 20.
Multiple the ratio to get 40:60:80, which adds up to 180.
Now add the smallest and largest angle, you get 120
- by Iakgmat
Fri Dec 07, 2018 4:43 pm- Forum: Problem Solving
- Topic: The ratio of the degree measures of the angles of a triangle
- Replies: 5
- Views: 738
There are 10 balls; 5 of which are even and 5 of which are odd. Probability of drawing 1 even ball is 50% Probability of drawing 1 odd ball is 50% Here are the possible combos: 1. Draw even; Draw Even ==> Adds to Even 2. Draw odd; draw odd ==> adds to even For (1): 50% * 50% For (2): 50% * 50% Then ...
- by Iakgmat
Fri Dec 07, 2018 7:36 am- Forum: Problem Solving
- Topic: An urn contains 10 balls, numbered from 1 to 10. If 2 balls
- Replies: 4
- Views: 697
reply
To use all 1/2/3/6 in a 4-digit number, this means no number can be used twice. Thus if we consider _ _ _ _, the last digit must either be 2 or 6. For the first three digits: the first digit we have 3 choices, 2 for the second, 1 for the third. Thus, 3*2*1. We can do this twice (with 2 or 6 as endin...
- by Iakgmat
Thu Dec 06, 2018 6:37 pm- Forum: Problem Solving
- Topic: If all of the telephone extensions in a certain company must
- Replies: 5
- Views: 827
reply
Not too sure about this approach... but.. Let P be the price per gallon Kim = 10P+0.9(10P) = 19P (versus 20P originally) Isabelle = 10P+0.9(15P) = 22P (versus 25P originally) Thus Kim has a discount of $$\frac{1}{20}P$$ Isabelle has a discount of $$\frac{3}{25}P$$ This corresponds to 5% discount for...
- by Iakgmat
Thu Dec 06, 2018 6:27 pm- Forum: Problem Solving
- Topic: During a special promotion, a certain filling station is off
- Replies: 3
- Views: 1024
Trial and Error Method
Easiest approach here is trial and error. Pick the lowest number (41) and put it into equation
(1) M + W = 200
(2) $$\frac{1}{5}M+\frac{1}{4}W\ =\ 41$$
Thus you get W = 20 and M = 160; which are valid numbers. Since this is the lowest answer...
Answer = 41
- by Iakgmat
Thu Dec 06, 2018 6:15 pm- Forum: Problem Solving
- Topic: In a 200 member association consisting of men and women, exa
- Replies: 4
- Views: 718