Multiple-Choice Questions EXERCISES ON PERCENTS

The percentage given is $\frac{1}{3}\%$. To convert a percentage to a fraction, divide by 100.

$$\frac{1}{3}\% = \frac{\frac{1}{3}}{100} = \frac{1}{3 \times 100} = \frac{1}{300}$$

Let the unknown number be $N$. The problem states "9 is $\frac{1}{3}\%$ of what number?". This can be written as:

$$9 = \frac{1}{300} \times N$$

To find $N$, multiply both sides of the equation by 300:

$$N = 9 \times 300$$ $$N = 2700$$

The calculated value $N=2700$ matches option (D).

The number is $\text{2,700}$.