There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. From the time the first paperback copy was sold until the last copy of the novel was sold 8 times as many paperback copies as hardback copies were sold. If a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?  Select the correct option
A) 45,000
B) 360,000
C) 364,500
D) 392,000
E) 405,000
Say x was the # of hardback copies sold from the time the first paperback copy was sold.   Then the total # of paperback copies sold was 9x;   Hence the total # of copies sold was (hardback)+(paperback)=(36+x)+(8x)=441 --&gt; x=45.   So, the total # of paperback copies sold was 9x=9*45= 
<gadget id="calculator">9*45</gadget>
<output>405</output>
405 or 405,000.   Answer: 405,000.
<result>E</result>
There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. From the time the first paperback copy was sold until the last copy of the novel was sold 8 times as many paperback copies as hardback copies were sold. If a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?