Answer:
The Present age of father is 40 years
The Present age of son is 10 years
Step-by-step explanation:
Given as :
Let the age of father = F years
The age of son = S years
According to question
F = 4 × S ......... 1
And
( F + 5 ) = 3 × ( S + 5 )
F + 5 = 3S + 15
Or, F - 3S = 15 -5
Or, F - 3S = 10 ......... 2
From Eq 1 and Eq 2
4S - 3S = 10
∴ S = 10 years
Put the value of S in eq 1
So , F = 4 × S = 4 × 10
∴ F = 40 years
Hence The Present age of father is 40 years
And The Present age of son is 10 years Answer
