In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the larger type, a printer page contains 1800 words. Using...

In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the larger type, a printer page contains 1800 words. Using a smaller type, a page contains 2400 words. The article is allotted 21 full pages in a magazine. How many pages must be in smaller type?