Answer:
Hence, Albert reads the maximum number of pages in a day.
Explanation:
- Albert read 15% of his 56-page book.
i.e. he reads 15% of 56 pages which is calculated as:

- Keith read 12% of his 64-page book.
i.e. she reads 12% of 64 page book.
So, the number of pages she reads is calculated as:

- Rita read 16% of her 42-page book.
i.e she reads 16% of 42 pages.
So, the number of pages she reads is calculated as:

- Bess read 10% of her 72-page book.
i.e. he reads 10% of 72 pages.
So, the number of pages he read is calculated as:

Hence, the greatest number of pages read in a day is by:
Albert.