now:
son's age --- x
man's age --- 3x
5 years ago:
son's age = x-5
man's age = 3x-5
3x-5 = 4(x-5)
solve and the mystery will be unravelled.
son's age --- x
man's age --- 3x
5 years ago:
son's age = x-5
man's age = 3x-5
3x-5 = 4(x-5)
solve and the mystery will be unravelled.
According to the given information, the man is thrice as old as his son, which can be expressed as:
Man's age = 3 * Son's age
Man's age = 3x
Five years ago, the man was four times as old as his son, so we can write an equation based on this:
Man's age 5 years ago = 4 * Son's age 5 years ago
(Man's age - 5) = 4 * (Son's age - 5)
(3x - 5) = 4 * (x - 5)
Now, we can solve this equation to find the value of "x" (son's age):
3x - 5 = 4x - 20
x = 20 - 5
x = 15
Therefore, the son's present age is 15 years.
To find the man's age, we substitute the value of "x" back into the equation:
Man's age = 3x
Man's age = 3 * 15
Man's age = 45
So, the man's present age is 45 years, and the son's present age is 15 years.