Question 05
The average weight of 16 boys in a class is 50.25 kgs and that of remaining 8 boys is 45.15 kgs. Find the average weight of all the boys in class.
Given:
Average weight of 16 boys in class = 50.25 kgs
average of remaining 8 boys = 45.15 kgs
To find:
Average weight of all boys in class
Now, Average weight of 16 boys = sum of weight of 16 boys/ 16
50.25 = sum/16
50.25 x 16 = sum
Sum = 804
Similarly, average weight of 8 boys = sum/ 8
45.15 = sum/8
Sum = 45.15 x 8 = 361.2
Now, average weight of 16 + 8 boys = sum of weight of 16 + 8 boys/16 + 8
= 804 + 361.2/24
= 48.55
Ans. Required average is 48.55 kgs.