According to the given information, Marks of A = C - 15 Marks of B = A – 12 And, A + B = 108 B = A – 12 So, A + A – 12 = 108 2A – 12 = 108 2A = 120 A = 60 A + B = 108 Since, A = 60 B = 48 A got 15 marks less than C So, C = A + 15 = 60 + 15 = 75 Hence, “75” is the correct answer.