D is the correct answer I think.
The answer is A hope this helped
Answer:
20 years old
Step-by-step explanation:
Let us assume that the son's age is x.
Therefore,
2.5x = 55 - 5
2.5x = 50
x = 20 years old
hope this helps :)
Answer:
f(1/3)= 8(1/3)= 8/3 is the solution
