2
Step by step explanation:
Given: The average mass of all the students in the class was 35.1 kg. After 1 student left the class, whose mass is 32.3kg, the average mass of the remaining students became 36.3kg, how many students were there in the class room now?
Find out: how many students were there in the class room after one student left
Solution: Let the total number of remaining student be= n
Let the total number of remaining student be= nAnd the sum of mass of all the students be = x kg
So,
Make x the subject of formula
And
divide both side by n
N = 2.333
so total number of students remaining is 2