Answer:
(?)=70
Step-by-step explanation:
<span>The 6 means we round the 7 up to the next number which is 8. Thus, we round 4.76 to </span>4.8
For this case we propose a rule of three:
31700 ------------> 8.8%
x ----------------------> 100%
Where "x" represents the number of copies sold to date.

Thus, to date 360,227 copies of the book have been sold.
ANswer:
To date, 360,227 copies of the book have been sold.