In a library the ratio of english books to math books, is the same as the ratio of math books to science book. if there are 1200 books on english and 1800 books on math, find the number of science books.
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Their are 2700 science books
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2700
English:Math = Math:Science
1200:1800 = 1800:Science
2:3 = 2:3
1800/2 = 900
900 × 3 = 2700
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