Norine can retire when her age and the number of years that she has worked add to 85. At present, she is 50 years old and has worked for 19 years. If she works continuously until she retires, how old will she be when she can retire?
(A) 53
(B) 54
(C) 58
(D) 66
(E) 69
At present, the sum of Norine's age and the number of years that she has worked is $50+19=69$. This total must increase by $85-69=16$ before she can retire.

As every year passes, this total increases by 2 (as her age increases by 1 and the number of years that she has worked increases by 1 ).

Thus, it takes 8 years for her total to increase from 69 to 85 , so she will be $50+8=58$ when she can retire.

ANSWER: (C)