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Mathematics, 13.07.2020 19:01 Andresssophie7379

A librarian has 4 times as many mysteries than romances. She lends out 12 mystery books. How many mystery books she have now if she started with 15 romances?

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A librarian has 4 times as many mysteries than romances. She lends out 12 mystery books. How many my...
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