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When a certain stock exchange closed on Tuesdays, $$\frac{1}{5}$$ of the stocks closed at the same price as on the previous day. Of the remaining stocks, 3 stocks closed at a higher price for every 4 stocks that closed at a lower price. What fraction of all the stocks on this exchange closed at a higher price than on the previous day?
For a certain type of can, the number of grams of aluminum per can decreased by 20 percent from 1994 to 1998, while the cost per gram of aluminum decreased by 60 percent. If the cost of the aluminum in y cans in 1994 was equal to the cost of aluminum in ky cans in 1998, then k=?


The figure shows a square in which each of four interior line segments connects the midpoint of a side to a vertex of the square. The area of the shaded regions what fraction of the area of the square?

Quantity A

$$\frac{9^{17}}{8^{17}}$$

Quantity B

$$\frac{9^{17}+5^{10}}{8^{17}+5^{10}}$$


Let $$m=(2^{3})( 3^{2})(5)(7^{2})$$ and $$p=(2^{2})(3^{5})(5^{4})(11)$$. What is the greatest common divisor of m and p?


Quadrilateral ABCD is inscribed in the circle shown. What is the value of x+y?

(Note: The measure of an angle inscribed in a circle is equal to half of the measure of the central angle that subtends the same arc.)
Which of the following best represents the graph of y = |x| + x in the xy-plane?

Let S be the set of integers from 1 to 10. How many subsets of S contain at least one even integer and at least one odd integer?


Quantity A

The number of doctors surveyed who said that drug Q was effective and did not say that drug R was effective

Quantity B

210


The table summarizes information about the 72 students in a history class. If a student is to be selected at random from the class, what is the probability that the student will be one who is male or a senior?

$$x^{4}-3x^{2}+2=0$$ and x > 1

Quantity A

x

Quantity B

$$\sqrt{2}$$


In the 3-digit positive integer N, the hundreds digit is m, the tens digit is s, and the units digit is p.

Quantity A

N

Quantity B

m+10s +100p


If x and y are negative integers, which of the following must be a positive integer?
P, Q, and R are consecutive multiples of 3, and P

Quantity A

P+Q+3

Quantity B

Q+R-3


y ≠ 0

Quantity A

$$\frac{\frac{2}{3}y+\frac{2}{3}y+\frac{2}{3}y}{3y}$$

Quantity B

$$\frac{2}{3}$$


Grace earned a total of d dollars for completing h hours of work. For completing h-2 hours of work, Mildred earned the same total amount that Grace earned for completing h hours of work. In terms of d and h, by how many dollars did the average amount Mildred earned per hour exceed the average amount Grace earned per hour?
Machine K, working alone at its constant rate, produces 100 units of product Z in 2 hours. Machine L, working alone at its constant rate, produces 100 units of product Z in 3 hours. Machine M, working alone at its constant rate, produces 100 units of product Z in 4 hours.

Quantity A

The amount of time that it takes machines K, L, and M, working simultaneously at their respective constant rates, to produce 100 units of product Z

Quantity B

1 hour


A certain company has 50 printers that print at the same constant rate. Working continuously and simultaneously at that rate, it takes 9 of the printers 5 hours to complete print job A. Working continuously and simultaneously at that rate, it takes n of the printers 3 hours to complete print job A.

Quantity A

n

Quantity B

16


Two officers, stationed at opposite ends of a 1.5-mile zone where the speed limit is 40 miles per hour, use stopwatches and two-way radios to check speeds through the zone. A certain driver traveled through the entire zone in exactly 108 seconds. If the penalty for speeding in this zone is $50 plus $10 for each mile per hour that the driver exceeded the speed limit, how much should the penalty be for this driver?
$$2^{3x}=4^{2y}$$[/br] x > 0 and y > 0

Quantity A

x

Quantity B

y


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