A book sold 38,900 copies in its first month of release. Suppose this represents 8.1% of the number of copies sold to date.

Question

The question  is about percents. This question is not long but not easy.

Answer 1

Actually, you have not asked a question.  Do you want to know how many copies have been sold to date?

 

Probably, so 0.081 x = 38,900, so x (# sold to date) = 480,247 (rounded).  A best seller!