(a) Find the total number of books Mr Wong has. Please explain how to calcuate.
更新1:
(b) If Mr Wong has 126 science fiction books, what percentage of his book collection is science fiction? Please explain how to calculate.
(b) If Mr Wong has 126 science fiction books, what percentage of his book collection is science fiction? Please explain how to calculate.
收錄日期: 2021-04-19 00:20:22
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https://hk.answers.yahoo.com/question/index?qid=20080123000051KK04303