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

### Instruction:
 金姆点了一份价值10美元的餐和一杯2.5美元的饮料。她给了20%的小费。她用一张20美元的钞票付款。她会得到多少找零？


### Response:
 小费是10*.2=2美元。
所以总共的费用是10+2.5+2=<<10+2.5+2=14.5>>14.5美元。
这意味着她会得到20-14.5=<<20-14.5=5.5>>5.5美元的找零。