#### 题目列表

If f is a fraction between -1 and 1, which of the following must be true?
At Pedantic Publishing Corporation,$\frac{1}{5}$ of the employees take the bus to work and $\frac{1}{3}$ drive to work. Of the employees who do not take the bus or drive to work, $\frac{1}{4}$ take the subway and the rest either walk or ride a bicycle. If $\frac{1}{7}$ of the remaining employees ride a bicycle to work, what fraction of the employees walks to work?_____
$\frac{(8x^21+12x^20-108x^19+\sqrt(36x^4))}/{(2x)}=3x$Which of the following values of x satisfy the above equation?
Brian spent $\frac{1}{4}$ of his paycheck to repair his car, and then paid the registration and insurance, which each cost $\frac{1}{4}$ of the remainder of his paycheck. If Brian had $0 before he was paid, and he now has$231 left, what was the amount of his paycheck?
If a is 60% of b, b is 40% of c, and c is 20% of d, then 6d is what percent of 20a?_____%
If 1 ≤ n ≤ 100, and $\frac{(n+7)}{2}$ is a multiple of 4 but not a multiple of 3, then which of the following could be true?Indicate all possible values.
In terms of y, what is the average (arithmetic mean) of 4y and 22 ?

#### Quantity A

The average (arith?metic mean) of 14, 22, and 48

#### Quantity B

The average (arith?metic mean) of 12, 22, and 50

2, 3, 5, 7

#### Quantity A

The average (arithmetic mean) of the numbers above

#### Quantity B

The median of the numbers above

Susan travels by car at an average speed of 50 miles per hour for 4 hours and then at an average speed of 20 miles per hour for 2 hours. What is her average speed, in miles per hour, for the entire 6-hour trip?
Liz owns 2 green t-shirts, 4 blue t-shirts, and 5 red t-shirts.

#### Quantity A

The probability that Liz randomly selects a blue t-shirt

#### Quantity B

$\frac{2}{5}$

#### Quantity A

The average (arithmetic mean) of 4 numbers, each less than 6 and greater than 5

#### Quantity B

The median of 6 numbers, each less than 5 and greater than 4

For which of the following values of x is the mode of 2x, x + 5, 3x-2, 5x-7, and 4x equal to 4 ?
A hat contains 18 raffle tickets, numbered 1 through 18. If two raffle tickets are chosen at random from the hat, what is the probability that both tickets are even numbers?
k > j > 0

#### Quantity A

The time it takes to read k words at j words per minute

#### Quantity B

The time it takes to read (k + 10) words at (j + 10) words per minute

How many committees of 5 members can be chosen from a group of 8 people?
The average (arithmetic mean) number of passengers on a subway car is 60. If the number of passengers on a car has a normal distribution with a standard deviation of 20, approximately what percent of subway cars carry more than 80 passengers?
If the average of 10, 12, n, and n is greater than 25, what is the least possible value of integer n ?
$x,x^2,x^y,x^(y-1),x^4,x^6$x > 1

#### Quantity A

The mode of the numbers above when y = 4

#### Quantity B

The median of the numbers above when y = 5

Trip A is 6x miles long and takes 5y hours. Trip B is 5x miles long and takes 4y hours.

#### Quantity A

The rate of trip A in miles per hour

#### Quantity B

The rate of trip B in miles per hour

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