The age of Somu is one-third his father's. 9 years back he was one-fifth of his father's age. What is his persent age ? Pick one
A) 11	B) 18	C) 14	D) 12	E) 10
Explanation :   Let Somu's age be x and that of his father be 3x.   So, x - 9 = 3x - 9/5 = x = 18   Answer : Option 18
<result>B</result>
The age of Somu is one-third his father's. 9 years back he was one-fifth of his father's age. What is his persent age ?