The library at school is organized by fiction and nonfiction books. There are 3 nonfiction books for every 7 fiction books. How many total books are there if the library has 240 nonfiction books?
2 answers:
Answer:
There are 800 total books.
Step-by-step explanation:
In order to find this, we need to create a proportion that compares the number of non-fiction books to the total. First would be the scale factor and the second would be the total.
3/10 = 240/x
Now we can cross multiply to solve
240*10 = 3 * x
2400 = 3x
800 = x
There are 800 total books
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