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User Mark Chackerian
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4.7k points

1 Answer

6 votes
1. 72 to 50 points
50/72 = 69%
100-69= 31% decrease

2. 14 to 40 books
14 / 40 = 35%
100-35= 65% increase

3. 10 plus 30% increase
10 * 0.3 = 13
User Kreshnik Hasanaj
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4.6k points
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