Question

The quotient of a secret number and 4 is 9

Answer 1

Let's call the 'secret number' x.

A quotient is basically a Dividend/Divisor. If the Divisor is 4, we need to find the dividend, which is x.

Therefore:
x/4=9
We need to isolate the variable by the multiplication property of equality.
x=36.

As a result, the "secret number" is 36