Answer:
9 years old
Explanation:
1. Set up the equation
4x = x + 27
This represents 4 times the age of amit is equal to amit's age plus 27 because sohan is older and their ages have a difference of 27 years.
2. Get x by itself on one side by subtracting
3x = 27
3. Solve for x by dividing both sides by 3
x = 9