The ratio of Math books to Science books in a class is 8:5. How many Math books are there if there are 45 Science books in all?
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The ratio of Math books to Science books in a class is 8:5. How many Math books are there if there are 45 Science books in all?
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Answer:
72 math books
45 ÷ 5 = 9
9 × 8 = 72