# In a class of 56 students there are 21 girls. The average weight of

| In a class of 56 students there are 21 girls. The average weight of these girls is 56 Kg and average weight of the full class is 62.875 kgs. What is the average weight of the boys of the class?

A. 69.75 kg

B. 72.5 kg

C. 67 kg

D. 65 kg

### Right Answer is: C

#### SOLUTION

As per the question:

Average weight of 21 girls is 56 Kg. So, total weigh of girls be (21 56) =1176 kgs

Average weight of the full class is 62.875 kgs, So Total weight of class = 56 62.875= 3521 kgs

Therefore, average weight of boys=

Hence the correct answer is option C

Share

In a class of 56 students there are 21 girls. The average weight of