number of words she has not typed. 26. There are 60 books on a bookshelf. 40% of them are novels and the rest are comics. (a) Find the number of comics on the bookshelf. () If 75% of the comics are written in Chinese, find the number of comics that are not written in Chinese. 27 There are some red marbles and blue marbles in a bag. The number of red marbles is 3 times that of the blue marbles. What percentage of the marbles are blue marbles? 28. A building has 550 flats. Of the flats, 60% are designed for offices and the rest are designed for warehouses. Now, 20% of the offices are empty. (a) Find the number of offices in the building that are empty. (b) If 30% of the flats are empty, find the percentage of the warehouses that are empty. 29. A restaurant offers 3 set meals, A, B and C. On a certain day, 45%