Alex is x years old. If his dad's age is 4 more than 3 times his age, how old is Alex's dad?
Rahul's dad's age is 4 more than 3 times of his present age. If Rahul is 11 years old, his dad is ___ years old.
Rohan's dad's age is 3 more than 4 times of his present age. If Rohan is 11 years old, his dad's age is :