Question

The average wight of 20 boys in a class is 160 kg and that of the remaining 5 boy is 50 kg find the average wight of all boys in the class

Answer 1

Answer:

Average weight of all boys in class are 8.4 kg or 8 kg 400 gram

Step-by-step explanation:

20+5= 25 boys weight is (160+50)= 210 kg

average weight is = 210÷25= 8.4 kg

Answer 2

Answer:

See a solution process below:

Explanation:

The formula for finding an average is:

A=Sum of All Values/

Total Number of Values

The total weight of the boys in the class is:

5×40kg

=200kg

The total weight of the girls in the class is:

35×50kg

=1750kg

The total weight of everyone in the class or the

Sum of All Values

is:

200kg+1750kg

=1950kg

The

Total Number of Values

is:

5boys+35girls

=40

Substituting and calculating the average weight of the entire class gives:

A=1950kg

40

=48.75kg