Q147
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.
45 kg
AnswerB.
50 kg
C.
53 kg
D.
55 kg
Answer: Option A
Solution
Answer: Option A
Solution:
Weight of the teacher= (35.4 × 25 - 35 × 24) kg
= 45 kg