A student gets 55% in one subject, 65% in the other. To get an overall of 55% how much should get in third subject.  Choose the correct option:
A) 75 %  B) 25 %  C) 45 %  D) 55 %  E) 65 %

Rationale: "let the 3 rd subject % = x 55 + 65 + x = 3 * 55 120 + x = 165 x = 165 - 120 = 45 answer : c"
Answer: C