Question

The average weight of 50 boys in a class is 45.5 kg. If the average weight of
30 girls is 35.5 kg, then find out the combined arithmetic mean of the weights
of the boys and girls of that c​

Answer 1

Answer:

Average weight of 50 boys=45.5 kg

Therefore, total weight of boys=50×45.5=2275kg

Average weight 30 girls =35.5

Therefore, total weight of girls=30×35.51=1065kg

Now, total weight of girls &boys

=2275+1065=3340 kg.

Combined Mean=Total weight of girls &boys

______________________

Total boys and girls

=3340/80

=41.75 kg

Therefore,

Combined arithmetic mean of the weights of the boys and girls is 41.75 kg.

Answer 2

Answer:

41.75

is your answer hope it helps........