Question

Average weight of 5 boys is 65kg, average weight of 4 girls is 56kg. What is the average weight of all 9 kids?

Answer 1

61

Explanation:

"Average weight of 5 boys is 65kg"
The total weight of the 5 boys can be found as `65times5 = 325`

"Average weight of 4 girls is 56kg"
The total weight of the 4 girls can be found as `56times4 = 224`

The average can then be found as `(325+224)/(4+5) = 549/9=61`