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

### Instruction:
 詹姆斯买了3包糖果。他用一张20美元的钞票付款，找回11美元。每包糖果的价格是多少？


### Response:
 糖果的总价是20-11=<<20-11=9>>9美元。
所以他每包糖果付费9/3=<<9/3=3>>3美元。