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

### Instruction:
Alison bought some storage tubs for her garage. She bought 3 large ones and 6 small ones, for $48 total. If the large tubs cost $6, how much do the small ones cost?

### Response:
 ให้ t เป็นราคาของถังขนาดเล็ก
3*6+6*t=48
18+6*t=48
6*t=30
6t=30
t=<<5=5>>5 ดอลลาร์ ต่อถังขนาดเล็ก