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

1 Answer
Lucy
May 31, 2018

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

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