Help me please. Thanks you so much
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Question
Answer
BigDevil
| Stickers | Bookmarks | |
| At first | 4u | 3u |
| Change | -16 | -20 |
| In the end | 4p | 1p |
Stickers
4p = 4u – 16
1p = 1u – 4
Bookmarks
1p = 3u -20
1u – 4 = 3u – 20
2u = 16
1u = 8
Number of bookmarks in the end -> 3u – 20 = 24 – 20 = 4