Answer:
8 years old is he right now.
Step-by-step explanation:
Let the present age of Ben be x.
As per the statement:
After 16 years.
Age of Ben will be = x + 16
In 16 years, Ben will be 3 times as old as he is right now.
⇒
Subtract x from both sides we have;

Divide both sides by 2 we have;
8 = x
or
x = 8 years
Therefore, 8 years old is he right now.