According to the first condition, the ratio of read pages to unread pages is 3: 5, assuming that 3X pages have been read at the beginning and 5X pages are still unread (a total of ***8X pages).

If we read 33 pages according to the second condition, we have read 3X+33 and 5X-33, and it is known that the ratio of read pages to unread pages is 4: 3, then we can get:

(3X+33)/(5X-33)=4/3

To understand the unary equation, we can get

X=2 1，

So we can know that the total number of pages is 8X= 168.

The answer is a *** 168 page ~ ~ ~

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