Is the sum of the integers x and y a prime number?

(1) x is an even prime number.
(2) y is a prime number between 10 and 20.

An attorney charged a fee for estate planning services for a certain estate.  The attorney’s fee was what percent of the accessed value of the estate?

(1) The accessed value of the estate was $1.2 million.
(2) The attorney charged $2,400 for the estate planning services.

What was the price at which a merchant sold a certain appliance?

(1) The merchant’s gross profit on the appliance was 20 percent of the price at which the merchant sold the appliance.
(2) The price at which the merchant sold the appliance was $50 more than the merchant’s cost of the appliance.

In the figure, points A, B, C, D, and E lie on a line.  A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle.  What is the area of the region inside the larger circle and outside the smaller circle?

(1) AB = 3 and BC =2
(2) CD =1 and DE = 4

What is the value of ~$v^{3} – k^{3}$~?

(1) ~$vk>0$~
(2) ~$v–k = 6$~

Is the standard deviation of the salaries of Company Y’s employees greater than the standard deviation of the salaries of Company Z’s employees?

(1) The average (arithmetic mean) salary of Company Y’s employees is greater than the average salary of Company Z’s employees.
(2) The median salary of Company Y’s employees is greater than the median salary of Company Z’s employees.

What is the median number of employees assigned per project for the projects at Company Z?

(1) 25 percent of the projects at Company Z have 4 or more employees assigned to each project.
(2) 35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.

Is ~$xy>\frac{x}{y}$~?

(1) ~$xy>0$~
(2) ~$y<0$~

For a convention, a hotel charges a daily room rate of $120 for 1 person and x dollars for each additional person.  What is the charge for each additional person?

(1) The daily cost per person for 4 people sharing the cost of a room equally is $45.
(2) The daily cost per person for 2 people sharing the cost of a room equally is $25 more than the corresponding cost for 4 people.

Joanna bought only $0.15 stamps and $0.29 stamps.  How many $0.15 stamps did she buy?

(1) She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.