A book sold 35,300 copies and its first month of release suppose this represents 9.9% of the number of copies sold to date how many copies have been sold to date round your answer to the nearest whole number

Let be "x" the number of copies that have been sold to date.
According to the information given in the exercise, 35,300 copies represent 9.9% of the number of copies sold to date.
Then, you can set up the following proportion:
[tex]\frac{35,300}{9.9}=\frac{x}{100}[/tex]Because "x" represents 100% of the copies sold to date.
Therefore, solving for "x", you get:
[tex]\begin{gathered} (\frac{35,300}{9.9})(100)=x \\ \\ x\approx356,566 \end{gathered}[/tex]Hence, the answer is:
[tex]356,566\text{ }copies[/tex]