When Leo imported a certain item, he made a 7 percent import tax on the portion of the total value of the item in excess of  $1,000.  If the amount of the import tax that Leo paid was $87.50, what was the total value of the item?

Ifx > 0, then ~$\frac{1}{\sqrt{2x}+\sqrt{x}}=$~

The figure shows a square patio surrounded by a walkway of width x meters.  If the area of the walkway is 132 square meters and the width of the patio is 5 meters greater than the width of the walkway, what is the area of the patio, in square meters?

In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males.  What percent of the employed people in Town X are females?

Ann, Carol, and Judy paid a total of $45 for their dinner at a restaurant.  If Ann paid ~$\frac{2}{5}$~ of the total amount, Carol paid $17, and Judy paid the rest, what fraction of the total amount did Judy pay?

If 10⁵⁰ – 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?

In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old.  If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

A set of numbers has the property that for any number t in the set, t + 2 is in the set.  If –1 is in the set, which of the following must also be in the set?

I. -3
II. 1
III. 5 

A gardener is going to plant 2 red rosebushes and 2 white rosebushes.  If the gardener is to select each of the bushes at random, one at a time, and plant them in a row, what is the probability that the 2 rosebushes in the middle of the row will be the red rosebushes?

A circular mat with diameter 20 inches is placed on a square tabletop, each of whose sides is 24 inches long.  Which of the following is closest to the fraction of the tabletop covered by the mat?