The sum of the ages of a father and son is 45 years. Five years ago the product of their ages was 4 times the fathers age at the time. The present ages of the father and son respectively are:

The sum of the ages of a father and son is 45 years. Five years ago

1.	The sum of the ages of a father and son is 45 years. Five years ago the product of their ages was 4 times the fathers age at the time. The present ages of the father and son respectively are:
A.	25 yrs. 10 yrs
B.	36 yrs, 9 yrs
C.	39 yrs, 6yrs
D.	none of these
Answer» C. 39 yrs, 6yrs