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

### Instruction:
 Snap, Crackle和Pop在一家杂货店花了150美元买了谷物。Snap花的钱是Crackle的两倍。Crackle花的钱是Pop的三倍。Pop花了多少钱？


### Response:
 让x代表Pop花的钱数（美元）
Crackle: 3x
Snap: 2(3x) = 6x
x + 3x + 6x = 150
10x = 150
x = 15