Given: A book sold 35,900 copies in its first month of release. Suppose this represents 8.3% of the number of copies sold to date.
Required: To determine how many copies have been sold to date.
Explanation: Let the number of copies sold to date be x. Then according to the question-
[tex]8.3\%ofx=35900[/tex]Simplifying for x as follows-
[tex]\begin{gathered} \frac{8.3}{100}\times x=35900 \\ x=\frac{35900\times100}{8.3} \\ x=432530.12 \\ \end{gathered}[/tex]Final Answer: The number of copies sold = 432,530 (approx).