AAPL wrote: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?

A. 45,000

B. 360,000

C. 364,500

D. 392,000

E. 396,900

**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**
Let x = number of hardback copies sold during this time

So 9x = number of paperback copies sold during this time

So, x + 9x = total number of copies sold DURING THIS TIME PERIOD

**A total of 441,000 copies of the novel were sold in all**
GIVEN: 36,000 hardback copies sold BEFORE the paperback version was issued.

So, we get: 36,000 + x + 9x = 441,000

Simplify: 36,000 + 10x = 441,000

We get: 10x = 405,000

Solve: x = 40,500

This also means 9x = 9(40,500) = 364,500

So, 364,500 paperback copies were

Answer: C

Cheers,

Brent