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

### Instruction:
 玛丽昂在他们去参加动物拯救日活动的动物救助中心里收到的乌龟比玛莎多20只。如果玛莎收到了40只乌龟，他们一共收到了多少只乌龟？


### Response:
 玛丽昂收到了40+20 = <<40+20=60>>60只乌龟。
两人一共收到了60+40 = <<60+40=100>>100只乌龟。