Final answer:
To complete the sticker book, 72 more stickers are needed.
Step-by-step explanation:
To find out how many more stickers are needed to complete the sticker book, we need to calculate the total number of stickers that can fit in the book and subtract the number of stickers that are already in the book.
Given that a sticker book can fit 6 stickers on each page and there are 20 pages in the book, the total number of stickers that can fit is 6 stickers x 20 pages = 120 stickers.
Since 8 out of 20 pages are full, the number of stickers already in the book is 6 stickers x 8 pages = 48 stickers. Therefore, the number of more stickers needed to complete the book is 120 stickers - 48 stickers = 72 stickers.
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