Problem:
The sum of two numbers is . Suppose  is added to each number and then each of the resulting numbers is doubled. What is the sum of the final two numbers?
Answer Choices:
A.  
B.  
C.  
D.  
E.  
Solution:
Suppose the two numbers are and . Then the desired sum is
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions