The average weight (in kg) of a family of five members, whose weights are 40 kg, 49 kg, 57 kg, 66 kg and 38 kg, is:

Question: The average weight (in kg) of a family of five members, whose weights are 40 kg, 49 kg, 57 kg, 66 kg and 38 kg, is:

Solution:
Given weights,
40, 49, 57, 66, 38

∴ Total weight = 40 + 49 + 57 + 66 + 38 = 250
And number of members = 5

∴ Average weight = 250/5 = 50

So, the average weight of the five family members is 50 kg.