Question

The average weight of 34 students of a class is 42kg.If the weight of the claeacher be included the average rises 400gm.Find the weight of the class teacher

Answer 1

Step-by-step explanation:

total wt. of students (x)/ total no. of students= avg. wt.

x/34=42

x=1428

since teacher wt. is added

x+wt.of teacher(y)/34+1=42+0.400

x+y=1484

1428+y=1484

hence wt. of the teacher is 56kg