Mathematics, 26.08.2019 10:20, aaqa3735

At roberts middle school 11/30 of the books in the library were more than 50 years old. at the end of the year 1/10 of those books were given to charity.
what fraction of all the books was given to charity?

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At roberts middle school 11/30 of the books in the library were more than 50 years old. at the end o...