For an employee to qualify for early retirement at a certain company, the sum of the employee’s age and years of service must be at least 80, If Sue was K years old when she was hired by the company, what is the minimum age at which she could possibly qualify for early retirement?  Choose the correct choice
A) K+40	B) 2K+40	C) (80+K)/2	D) (80-K)/2	E) 2(80-K)
Let y be the years of service at the company.   After y years of service, Sue's age will be K + y.   Sue can retire when (K+y) + y = 80   y = (80 - K)/2   Then Sue's age will be K + y = K + (80 - K)/2 = (80+K) / 2   The answer is (80+K)/2.
<result>C</result>
For an employee to qualify for early retirement at a certain company, the sum of the employee’s age and years of service must be at least 80, If Sue was K years old when she was hired by the company, what is the minimum age at which she could possibly qualify for early retirement?