Given:
A book sold 42,500 copies in its first month of release. Suppose this represents 7.9% of the number of copies sold to date.
Required:
Total number of copies sold to date.
Step-by-step explanation:
42500 is just 7.9% of total copies
we need to find total copies
for this
take x number of total copies

Final answer:
Total number of copies is 537975