Question

The average weight of a group of 20 people is 50kgs. Another group of 30 people have their average weight as 60 kgs. If these two groups are combined together, what is the average of this combined
group?
52 kgs
54 kgs
56 kgs
50 kgs​

Answer 1

Answer:

52 kgs

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Answer 2

Answer:

56kg

Step-by-step explanation:

given, for the group of 20 people, average weight = 50 kgs (group A)and

for the group of 30 people, average weight = 60 kgs (group B)

total weight of people in group A = 50×20 = 1000 kgs

total weight of people in group B= 60×30 = 1800 kgs

total number of people in group A and B= 50

total weight of people from A and B = 1000+1800 = 2800

average weight of people from both groups = total weight of people from both groups/ total number of people

=$\frac{2800}{50}$ = 56

therefore, the average weight of people from both groups = 56 kgs