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题目内容
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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