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

### Instruction:
 约翰买了一副价值200美元的耳机。如果税率是15%，税后他支付了多少钱？


### Response:
 税额是200 * 0.15 = $<<200*.15=30>>30。
所以他支付了200 + 30 = $<<200+30=230>>230。