Search found 30 matches
Probability
On a store counter are exactly 2 boxes containing only purple marbles and yellow marbles. Box A has 30 purple marbles and 20 yellow marbles; box B has 15 purple marbles and 35 yellow marbles. If Melanie randomly selects one of the boxes and then randomly selects one marble from that box, what is the...
- by Sak32
Sat Jan 25, 2014 6:07 am- Forum: Problem Solving
- Topic: Probability
- Replies: 4
- Views: 2164
Women/Children/Men
On a certain sight-seeing tour, the ratio of the number of women to the number of children was 5 to 2. What was the number of men on the sight-seeing tour? 1) On the sight-seeing tour, the ratio of the number of children to the number of men was 5 to 11. 2) The number of women on the sight-seeing to...
- by Sak32
Wed Jan 15, 2014 7:52 am- Forum: Data Sufficiency
- Topic: Women/Children/Men
- Replies: 3
- Views: 1303
Probability
Each of the 25 balls in a certain box is either red, blue, or white and has a number from 1 to 10 painted on it. If one ball is to be selected at random from the box, what is the probablitiy that the ball selected will either be white or have an even number painted on it? 1) The probability that the...
- by Sak32
Wed Jan 08, 2014 7:08 am- Forum: Data Sufficiency
- Topic: Probability
- Replies: 1
- Views: 1166
Sequence and mean
If the terms of a sequence are t1,t2,t3...tn, what is the value of n?
1) The sum of the n terms is 3124
2) The average (arithmetic mean) of the n terms is 4.
Source material: Gmat prep. I need explanations please. Thank you.
- by Sak32
Tue Jan 07, 2014 9:38 am- Forum: Data Sufficiency
- Topic: Sequence and mean
- Replies: 1
- Views: 2275
No I didn't create it. I know what the answer is its just I had difficulty with the first statement. So if you could provide me with explanations that would be helpful. Thanks.
- by Sak32
Sun Jan 05, 2014 1:43 am- Forum: Data Sufficiency
- Topic: Dollars
- Replies: 5
- Views: 1887
Dollars
For each customer, a bakery charges p dollars for the first loaf of bread bought by the customer and charges q dollars for each additional loaf of bought by the customer. What is the value of p? 1) A customer who buys 2 loaves is charged 10 percent less per loaf than a customer who buys a single loa...
- by Sak32
Sat Jan 04, 2014 10:54 am- Forum: Data Sufficiency
- Topic: Dollars
- Replies: 5
- Views: 1887
Distance
Did it take Pei more than 2 hours to walk a distance of 10 miles along a certain trail? (1 mile= 1.6 kilometer, rounded to the nearest tenth.) 1) Pei walked this distance at an average rate of less than 6.4 kilometer per hour. 2) On average, it took Pei more than 9 minutes per kilometer to walk this...
- by Sak32
Sat Jan 04, 2014 10:47 am- Forum: Data Sufficiency
- Topic: Distance
- Replies: 2
- Views: 2982
Chocolate and toffee
Rasheed bought two kinds of candy bars, chocolate and toffee, that came in packages of 2 bars each. He handed out 2/3 of the chocolate bars and 3/5 of the toffee bars. How many packages of chocolate bars did Rasheed buy? 1) Rasheed bought 1 fewer package of chocolate bars than toffee bars. 2) Rashee...
- by Sak32
Sat Dec 21, 2013 3:26 am- Forum: Data Sufficiency
- Topic: Chocolate and toffee
- Replies: 1
- Views: 1099
Wire
A thin piece of wire 40 meters long is cut into 2 pieces. One piece is used to form a circle with radius r, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square meters, of the circular and the square regions in terms of r? 1)Pi(r^2...
- by Sak32
Fri Dec 20, 2013 1:47 pm- Forum: Problem Solving
- Topic: Wire
- Replies: 2
- Views: 1066
Pears
Pat bought 5 pounds of apples. How many pounds of pears could Pat have bought for the same amount of money?
1) One pound of pears costs 0.50$ more than one pound of apples.
2) One pound of pears costs 3/2 times as much as one pound of apples.
- by Sak32
Fri Dec 20, 2013 1:36 pm- Forum: Data Sufficiency
- Topic: Pears
- Replies: 3
- Views: 1816
Pasta
Malik's recipe for 4 servings of a certain dish requires 3/2 cups of pasta. According to this recipe, what is the number of cups of pasta that Malik will use the next time he prepares this dish. 1) The next time he prepares this dish, Malik will make half as many servings as he did the last time he ...
- by Sak32
Fri Dec 20, 2013 1:32 pm- Forum: Data Sufficiency
- Topic: Pasta
- Replies: 1
- Views: 1151
Candy bars
Rasheed bought two kinds of candy bars, chocolate and toffee, that came in packages of 2 bars each. He handed out 2/3 of the chocolate bars and 3/5 of the toffee bars. How many packages of chocolate bars did Rasheed buy? 1) Rasheed bought 1 fewer package of chocolate bars than toffee bars. 2) Rashee...
- by Sak32
Fri Dec 20, 2013 1:29 pm- Forum: Data Sufficiency
- Topic: Candy bars
- Replies: 1
- Views: 1655
Probability
If an integer n is to be chosen at random from the integers 1 to 96, inclusive, what is the probability that n(n+1)(n+2) will be divisible by 8?
1) 1/4
2) 3/8
3) 1/2
4) 5/8
5) 3/4
- by Sak32
Wed Dec 11, 2013 11:22 am- Forum: Problem Solving
- Topic: Probability
- Replies: 1
- Views: 1050
Slope
In the xy plane, is the slope of line k equal to 0?
1) The x-intercept of k is 0.
2) The y-intercept of k is 0.
Please provide clear explanations. Thank you.
- by Sak32
Sun Dec 08, 2013 11:54 am- Forum: Data Sufficiency
- Topic: Slope
- Replies: 1
- Views: 1086
- by Sak32
Tue Dec 03, 2013 7:17 am- Forum: Problem Solving
- Topic: Cylindrical tank
- Replies: 6
- Views: 1447