pyq/2017/csat/28

Suppose the average weight of 9 persons is 50 kg. The average weight of the first 5 persons is 45 kg, whereas the average weight of the last 5 persons is 55 kg. Then the weight of the 5th person will be

(A) 45 kg

(B) 47.5 kg

(C) 50 kg

(D) 52.5 kg