Question

Part A. 0.3 is 30% of what number ?

Answer 1

Let be "x" the number that represents 100%.

According to the information given in the exercise, 30% of the number "x" is:

$0.3$

Then, you can set up the following proportion:

$\frac{0.3}{30}=\frac{x}{100}$

Now you can solve for "x" in order to find the number:

$\begin{gathered} (100)(\frac{0.3}{30})=x \\ \\ \frac{30}{30}=x \\ \\ x=1 \end{gathered}$

Therefore, the answer is:

$1$