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(D) Let the weight of the teacher be $w \ kg$.Total weight of $35$ students = $35 	imes 40 = 1400 \ kg$.When the teacher is included,the total number

Vedclass · Accepted Answer

$58$

Vedclass · Answer

(D) Let the weight of the teacher be $w \ kg$.Total weight of $35$ students = $35 	imes 40 = 1400 \ kg$.When the teacher is included,the total number of people becomes $35 + 1 = 36$.The new average weight = $40 + 0.5 = 40.5 \ kg$.Total weight of $36$ people = $36 	imes 40.5 = 1458 \ kg$.The weight of the teacher $w = 	ext{Total weight of } 36 	ext{ people} - 	ext{Total weight of } 35 	ext{ students}$.$w = 1458 - 1400 = 58 \ kg$.

The average weight of students in a class of $35$ students is $40 \ kg$. If the weight of the teacher is included,the average weight increases by $0.5 \ kg$. The weight of the teacher is.....$kg$.

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