Final answer:
To find the number of pages filled with stamps in the album, subtract the number of empty pages from the total number of pages.
Step-by-step explanation:
To find the number of pages that are filled with stamps, we first need to calculate the number of pages that are empty. We know that 43% of the album is empty, so we can find this by multiplying 800 (the total number of stamps) by 0.43. This gives us 344 pages that are empty.
Now, we can subtract the number of empty pages from the total number of pages in the album to find the number of filled pages. So, 800 - 344 = 456 pages are filled with stamps.
Therefore, there are 456 pages filled with stamps in the album.