Aihua Bookstore sells ***200 reference books, fairy tales, poems and novels in one day. Xiao Ming made a statistical chart of the day's book sales as shown on the right. These four

200×25%=50 (book);

200×25%=50 (book);

200×20%=40 (book) ;

200×30%=60 (books);

Answer: There are 50 reference books, 50 fairy tales, 40 poems, and 60 novels.