a father is four timrs as old as his son.5 years ago he was 7times as old as his son was.What is sons present age
see your previous post
To find the son's present age, we need to set up equations based on the given information.
Let's assume the son's present age is 'x' years.
According to the given information, the father is four times as old as his son, so the father's present age would be 4x years.
Now, 5 years ago, the son's age would have been (x-5) years, and the father's age would have been (4x-5) years.
It is also given that 5 years ago, the father was 7 times as old as his son. So, we can set up the equation:
(4x - 5) = 7(x - 5)
Let's solve the equation to find the son's present age:
4x - 5 = 7x - 35
Add 35 to both sides:
4x + 30 = 7x
Subtract 4x from both sides:
30 = 3x
Divide both sides by 3:
10 = x
Therefore, the son's present age is 10 years.