Question

If 9 is added to a certain number, the result is 36. Find the number.

Answer 1

Let the required number be x.
According to the question:
9 + x = 36
or, x + 9 − 9 = 36 − 9 [Subtracting 9 from both the sides]
or, x = 27
Thus, the required number is 27.