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The average age of A and B is 20 years. ...

The average age of A and B is 20 years. If C were to replace A, the average would be 19 and if C were to replace B, the averge would be 21. What are the age of A, B and C?

A

22,18,20

B

18,22,20

C

22,20,18

D

18,20,22

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The correct Answer is:
A
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