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 B. 50 kg C. 53 kg D. 55 kg Answer: Option AShow Answer
Solution(By Apex Team)
$\begin{array}{l}\text{Weight of the teacher}\\
\text{= (35.4 × 25 )- (35 × 24) kg}\\
\text{= 45 kg}\end{array}$
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