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

### Instruction:
 凯斯和布莱恩去钓鱼。布莱恩捕到了5条鱼，而凯斯捕到的是布莱恩的两倍。他们一共捕到了多少条鱼？


### Response:
 凯斯捕到了5 x 2 = <<5*2=10>>10条鱼。
所以，他们一共捕到了5 + 10 = <<5+10=15>>15条鱼。