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Mathematics 12 Online
OpenStudy (anonymous):

The ratio of the books in the sample above is representative of the books in a bookcase in the library. If there are 21 red books in the bookcase, then how many yellow books are in the bookcase? 35 40 42 30

OpenStudy (anonymous):

brb

OpenStudy (anonymous):

ok back

OpenStudy (anonymous):

@rockinhoo

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