If the average weight of 40 apples is 33 kg and that of 32 apples is 60 kg, then the average weight (in kg) of all the apples is:

Correct option is B

Given:
Average weight of 40 apples = 33 kg
Average weight of 32 apples = 60 kg
Formula Used:
Average = $$\frac{Sum \ of \ all\ the\ values}{Total \ number \ of \ values}$$​​
Solution:
As per the average formula,
Total weight of 40 apples = 33 × 40 = 1320 kg
Total weight of 32 apples = 32 × 60 = 1920 kg
Total weight of 72 apples = 1320 + 1920 = 3240 kg
Average weight of all the apples = $$\frac{3240}{72}$$​ = 45 kg