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

### Instruction:
 冈纳有一个装有比插头少20对的手套的盒子。他决定将30对插头放入插头盒子中。如果手套盒子里有150对手套，那么插头有多少对？


### Response:
 由于手套对数比插头少20对，所以有170对插头。
当冈纳决定在插头盒子中再加入30对插头时，插头对数增加到170+30 = 200。
由于一对有两个，200对插头总共有200*2 = <<200*2=400>>400个插头。