The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is :
A. 47 kg
B. 45 kg
C. 48 kg
D. 46 kg
Answer:B
The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is :
A. 47 kg B. 45 kg C. 48 kg D. 46 kg