The library at school is organized by fiction and nonfiction books. There are three nonfiction books for every seven fiction boo
ks. How many total books are there if the library has 240 nonfiction books
2 answers:
Ratio- 3:7
240/3= 80
80x7=560
3/7 = 240/x....3 non-fiction to 7 fiction = 240 non fiction to x fiction
cross multiply
(3)(x) = (240)(7)
3x = 1680
x = 1680/3
x = 560
so we have 240 non-fiction books and 560 fiction books...for a total of
(240 + 560) = 800 books <==
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