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 441.000 copies of the novel were sold in all, how many paperback copies were sold?
C. 36 + x + 9x = 441 -> 9x = (441-36)*9/10 = 364.5
same thing for me. 36,000 +h+p = 441,000 --> 35+h+p=441, where p=9h --> solve for h=40.5, and therefore p = 9*40.5 = 364.5