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 9 times as many paperback copies as hardback copies were sold. If a total of 439,000 copies of the novel were sold in all, how many paperback copies were sold?
Answers: A) 45,000 B) 360,000 C) 362,700 D) 392,000 E) 396,900
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)+(9x)=439 --&gt; x=40.3.   So, the total # of paperback copies sold was 9x=9*40.3= 
<gadget id="calculator">9*40.3</gadget>
<output>362.7</output>
362.7 or 362,700.   Answer: 362,700.
<result>C</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 9 times as many paperback copies as hardback copies were sold. If a total of 439,000 copies of the novel were sold in all, how many paperback copies were sold?