The age of Somu is one-third his father's. 6 years back he was one-fifth of his father's age. What is his persent age ?
Pick
A) 11  B) 13  C) 14  D) 12  E) 10
Explanation :   Let Somu's age be x and that of his father be 3x.   So, x - 6 = 3x - 6/5 = x = 12   Answer : Option 12
<result>D</result>
The age of Somu is one-third his father's. 6 years back he was one-fifth of his father's age. What is his persent age ?