The average weight of 4 students decreases by 8 kg when one of them weighing 96 kg is replaced by a new student. The weight of the student is Choose one:
A) 62 kg	B) 60 kg	C) 64 kg	D) 72 kg	E) none of these

Rationale: explanation : let the weight of student be x kg . given , difference in average weight = 8 kg = > ( 96 - x ) / 4 = 8 = > x = 64 answer : c
Answer: C