Average age of A and B is 20 years. Average age of B and C is 18 years. Average age of A and C is 21 years. What is the average age (in years) of A, B and C?

Average age of A and B is 20 years. Average age of B and C is 18 years

1.	Average age of A and B is 20 years. Average age of B and C is 18 years. Average age of A and C is 21 years. What is the average age (in years) of A, B and C?
A.	7.1
B.	19.67
C.	19
D.	29.5
Answer» C. 19

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Average age of A and B is 20 years. Average age of B and C is 18 years. Average age of A and C is 21 years. What is the average age (in years) of A, B and C?

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