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

### Instruction:
Ashley had a birthday party and invited 20 of her friends, telling them to each invite one more person to attend the party. If half the number of the invited guests each came with one more person, what's the total number of people at the party, including Ashley?

### Response:
The total number of people at the party is the number of friends invited, which is 20, plus the number of friends who each came with one more person, which is half of 20, or 10, plus Ashley, who is 1. The total number of people at the party is 20 + 10 + 1 = <<20+10+1=31>>31.
#### 31

