Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son.Find the fathers' present age.  Choose the correct choice:
A) 41	B) 40	C) 39	D) 45	E) 30
fathers age =x sons age =y   x=5y;x-4=9(y-4)   5y-4=9y-36   y=8 so x=40   ANSWER:40
<result>B</result>
Fathers age is 5 times his son's age. 4 years back the father was 9 times older than son.Find the fathers' present age.