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 :	Options:
A) 45 kg B) 46 kg C) 47 kg D) 48 kg E) 49 kg
Explanation:   Weight of the teacher = (35.4 x 25 - 35 x 24) kg = 45 kg. 45 kgnswer: 45 kg
<result>A</result>
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 :