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

### Instruction:
In Henry's collection of music CDs, he has 3 more country CDs than rock CDs but twice as many rock CDs as classical CDs. If he has 23 country CDs, how many classical CDs make up his collection?

### Response:
 เฮนรี่มีแผ่นซีดีเพลงร็อค 20 แผ่น (23-3)
เฮนรี่มีแผ่นซีดีเพลงคลาสสิค 10 แผ่น (20/2)