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

### Instruction:
 艾丽莎、基莉和肯德尔从一家快餐店订购了100块鸡块。基莉和肯德尔各自吃了艾丽莎的两倍。艾丽莎吃了多少块？


### Response:
 要解决这个问题，首先需要建立方程式100=a+(2a)+(2a)
100=5a
100/5=<<100/5=20>>20
艾丽莎吃了20块。