Math, asked by samikhanpro1234, 1 day ago

The average age of A and B is 20 years, that of B and C is 19 years and that of A and C is 21 years. What is the age of B(in years)

Answers

Answered by popatkhot1977

1

Answer:

a+b=20×2=40

b+c=19×2=38

a+c=21×2=42

adding 1,2,3

b+a+c=60

b+42=60

b=18

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