Explanation:
let's represent Ram's age by x
Since Ram's father is thrice the age of his Son, He will be 3x old.
Now we know from the question that adding their ages will give you 40
Writing this whole thing gives you
3x +x = 40
4x =40
To find x, you have to make it stand alone
Therefore divide both sides of your equation by 4 to get
x = 10
Now to find Ram's father's age, you multiply Ram's age by 3
3×10=30
Therefore Ram'sfather is 30 years old