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Machines A, B, and C produce widgets at their respective constant rates. Machine A produces $$n$$ widgets in $$x$$ hours, machine B produces $$n$$ widgets in $$2x$$ hours, and machine C produces $$n$$ widgets in $$3x$$ hours. In terms of $$x$$, how many hours does it take the three machines, working simultaneously at their respective constant rates to produce $$n$$ widgets?
A bus traveled $$m$$ miles in $$h$$ hours at an average speed of $$r$$ miles per hour. If the number of hours traveled by the bus had been 20 percent greater and the average speed had been 20 percent less, then the distance traveled by the bus would have been what percent less?

_____%


In the figure above, what is the length of AB?
A right circular cylindrical tank sitting on its base has a height of 6 feet and a volume of 54π cubic feet. What is the circumference, in feet, of the tank's base?
In 2001 the average starting salary for the consulting category was $47,900. Which of the following is closest to the percent decrease in the average starting salary for the consulting category from 2001 to 2002?
What percent of the employment categories with ranks available for both 2001 and 2002 had a higher rank in 2002 than in 2001?
The eleven employment categories are to be ranked according to their average starting salaries in 2002, with the highest rank of 1 indicating the highest starting salary. How many of the employment categories wil be ranked higher in this ranking than in the ranking according to the number of job openings in 2002?
$$P$$ and $$Q$$ are regular polygons with $$n$$ sides and $$n+1$$ sides, respectively.

Quantity A

The median of the $$2n+1$$ measures of the interior angles of $$P$$ and $$Q$$

Quantity B

($$\frac{n-1}{n+1})180°$$


$$x=(a+b)^2$$

$$y=(a-b)^2$$

$$z=a^2+b^2$$

If $$a < 0$$ and $$b > 0$$, which of the following must be true?
Line l passes through point (3, 1) and (6, 4). Line m is parallel to line l and has an x-intercept of -2.

Quantity A

The y-intercept of line m

Quantity B

The y-intercept of line l


The standard deviation of $$x$$, $$y$$, and $$z$$ is $$d$$.

Quantity A

The standard deviation of $$x+1$$, $$y+1$$, and $$z+1$$

Quantity B

$$d+1$$


If $$k$$ is an integer greater than 3, then $$\frac{k!}{(k-3)!}$$=
What percent of all the integers between 1 and 2,000, inclusive, are squares of an integer?


In the xy-plane shown, the x-axis represents an east-west road, the y -axis represents a north-south road, and the origin represents the intersection of the two roads. Point A and point B represent the centers of Town A and Town B, respectively, and the center of Town A is 5 kilometers north of the intersection. If the line through the origin and point B has slope $$\frac{3}{4}$$, which of the following is closest to the distance, in kilometers, between the centers of Town A and Town B?


PQRS is a parallelogram.

Quantity A

The area of the shaded triangular region

Quantity B

The sum of the areas of the two unshaded triangular regions


Integer x is the least of three consecutive integers x, y, and z. What is the sum of y and z in terms of x?
$$a_1, a_2, a_3,...............a_n,....................$$

The sequence shown is defined by $$a_{1}=10$$, $$a_{2}=100$$, and $$a_{n+1}=(a_{n})(a_{n-1})$$ for each positive integer $$n$$ greater than $$1$$. What is the least value of $$n$$ for which $$a_{n}$$ has at least 100 digits?
$$n$$ is an integer greater than 1,000.

Quantity A

The number of prime numbers that are greater than n and less than $$n+15$$

Quantity B

6


Which of the following is closest to the ratio of the land area of the Earth to the water area of the Earth?
The South China Sea occupies 2,974,600 square kilometers of water area of the Pacific Ocean. Approximately what percent of the water area of the Pacific Ocean is occupied by the South China Sea?

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