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

### Instruction:
At a party, there are 50 people. 30% of them are boys. How many girls are at this party?

### Response:
There are 50 * 30/100 = <<50*30/100=15>>15 boys at that party.
That means there are 50 - 15 = <<50-15=35>>35 girls.
#### 35