Question

) A man is thrice as old as his son. Four years ago the 5on's age was
that of his father. Find their present ages.
3
11​

Answer 1

Answer:

Let the age of son be x

Let his father's age be 3x

Five years ago, age of son = x - 5  

Five years ago, age of father = 3x - 5

5 years ago the man was four times as old as his son = 4(x - 5)

According to the question,

3x - 5 = 4(x - 5)

3x - 5 = 4x - 20

3x - 4x = -20 + 5

x = 15

x = 15

Present age of son is x

=> 15 years

Present age of father =. 3x

=> 3 * 15

=> 45 years