The answer is d, i believe .
Answer:
this one is a glitch in khan academy its broken
Step-by-step explanation:
So there is a total of 2000 books, subtract 500 from that because thats how many childrens books there are. SO you have 1500, there are 200 more fiction books than nonfiction so that would mean there are 950 fiction books and 550 nonfiction books.