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

The average age of A and B is 20 years. If C were to replace A, averag

1.	The average age of A and B is 20 years. If C were to replace A, average would be 19 and if C were to replace B, the average would be 21. The ages of A, B and C respectively are:
A.	18, 20, 22
B.	22, 18, 20
C.	18, 22, 20
D.	20, 22, 18
Answer» C. 18, 22, 20