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

### Instruction:
 贝丝去购物了。她买了比玉米罐头的数量多15罐豌豆罐头的两倍。如果她买了35罐豌豆罐头，她买了多少罐玉米罐头？


### Response:
 假设她买的玉米罐头的数量为a
玉米罐头的两倍是2*a = 2a
35罐豌豆罐头比玉米罐头的两倍多15罐，即15+2a = 35
解方程2a=20得到a = 20/2 = <<20/2=10>>10罐玉米罐头