Question

The average weight of the 30 boys in class is 28kg and that of the 12 girls is 21 kg. What is the average weight of the class?

Answer 1

Answer:

26 KG IS THE AVERAGE WEIGHT OF THE CLASS

Answer 2

Step-by-step explanation:

Given,

Avg.of 30 boys=28kgs

therefore, sum=30×28=840kgs=

also given,

Avg.of 12 girls=21kg

therefore,sum=12×21=252kgs

then,total weight=840+252=1092kg

total people=12+30=42

hence,

Total Average=1092/42

Total Average=1092/42=26kgs

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