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

### Instruction:
 麦迪为复活节收到了40个巧克力蛋。她喜欢在放学后每天吃两个。如果麦迪每天放学后吃两个巧克力蛋，它们能持续多少周？


### Response:
 麦迪每天放学后吃2个蛋，一周有5个上学日，所以她每周吃10个蛋。
因此，麦迪有40个蛋 / 每周10个蛋，它们能持续4周。