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Ilya [14]
3 years ago
11

Help me PLZZZZZZZ!!!!!!

Mathematics
1 answer:
eduard3 years ago
7 0

Answer:

25% decrease

Step-by-step explanation:

Take the original amount of books and subtract the new number of books

20 -15 = 5

Divide by the original amount of books

5/20 = .25

Multiply by 100%

25%

It is a decrease since the amount went down

25% decrease

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