In a class of 22 students, 21 students get an average of 44 marks. if the remaining students gets 66 marks, what is the average marks of the whole class
Answers
Answer:
Step-by-step explanation:
Given,
The total strength of a class = 22
The average marks of 21 students = 44
The marks obtained by the remaining student = 66
To find,
The average marks of the whole class.
Solution,
We can simply solve this mathematical problem using the following process:
Mathematically,
Average of a set of observations
= (sum of all the observations)/(total number of observations)
Now, according to the question;
The average marks of 21 students = 44
=> (sum of the marks obtained by the 21 students)/(21) = 44
=> sum of the marks obtained by the 21 students = 44×21 = 924
Now, according to the question;
The average marks of the whole class
= (sum of the marks obtained by all the 22 students)/(22)
= {(sum of the marks obtained by all the 22 students) + marks obtained by the remaining student)}/(22)
= (924+66)/22
= 990/22
= 45
Hence, the average mark of the whole class is equal to 45.