Question

if the mean weight of a class of 34 student is 42 kg. if the weight of the teacher be included, the weight rises by 400 grams. find the weight of the teacher

Answer 1

total weight of all students=34*42=1428

after inclusion of teacher =35*42.4=1484

difference bw them=56=weight of teacher.

.

7 years agoHelpfull: Yes(3) No(0) ((42*34)+x)/35=42+0.400

if we solve this then x=56

weight of teacher is=567 years

avg of 34 s = 42 hence total weight = 1428

avg 35(34+teacher)=42.4 hence total weight=1484

differnce of two=56 (age of teacher)7 years ago

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