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yesbookworm
Answers (2)
each guide book : x kg each magazine : 2x kg empty briefcase : y kg 2x * 5 + y = 2.58 2.58 + 6.2x + 22 * x = 4.28 x = 0.05 y = 2.08 2.08 kg
Total books in the bookstore = 210 Number of fiction books = 5/7 * 210 = 150 Number of non-fiction books = 210 - 150 = 60 Number of books in English = 2/3 (fiction books) + 5/6 (non-fiction books) = 2/3 (150) + 5/6 (60) = 100 + 50 150 books are in English
