Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Lidia has a collection of books. Her collection is four times bigger than the collection which her friend Susan has. In total Susan and Lidia, both have 3000 books. How many books does Susan have in her collection?

### Response:
 Hebu x iwe idadi ya vitabu katika mkusanyiko wa Susan.
Mkusanyiko wa wote Susan na Lidia basi ungekuwa 4*x + x = 3000.
5*x = 3000
x = <<600=600>>600