Question

In the library,  9/20 of the books are textbooks . 7/20 are story books and the rest are teacher's books . What percentage of library books does the teacher's books account for? 

Answer 1

mik ko hiểu tiếng anh bn phải dăng câu hỏi là môn toán mới đúng

Answer 2

ko hiểu đề lắm :

câu này ne : What percentage of library books does the teacher's books account for?

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Answer 3

The percentage of teacher's books in the library is: (1 - 9/20 - 7/20) x 100% = 20%