Question

Four years ago, Diljit was 8 years old. How old is he today?

Answer 1

Let us suppose he is a years old today.
Now, let’s write the given information using a.
a - 4 = 8
∴ a - 4 + 4 = 8 + 4..............(Adding 4 to both sides)
∴ a + 0 = 12
∴ a = 12
∴ Diljit is 12 years old today.