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Anastaziya [24]
4 years ago
6

There are 13 books on a shelf. 5 of these books are new.

Mathematics
2 answers:
Sergio039 [100]4 years ago
7 0
If there are 13 total books then you have a ratio of 5:13 new books.
 And if the books are used the ratio is 8:13
bazaltina [42]4 years ago
5 0
A is 8:13 and B is 8:5
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we can make this...

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I'm sure about my answer, don't matter the order...
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