The average ages of (P,Q); (Q, R); (R,P) are 13, 14 and 12 years respectively. What is the age of Q?

The average ages of (P,Q); (Q, R); (R,P) are 13, 14 and 12 years respe

1.	The average ages of (P,Q); (Q, R); (R,P) are 13, 14 and 12 years respectively. What is the age of Q?
A.	11 years
B.	15 years
C.	13 years
D.	12 years
Answer» C. 13 years