1.

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»

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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