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

### Instruction:
 Darasani kuna wanafunzi 30. 1/3 yao ni wavulana. Kati ya wasichana, 40% wana mbwa, 20% wana paka, na wengine hawana wanyama kipenzi. Wasichana wangapi darasani hawana wanyama kipenzi?


### Response:
 2/3 ya wanafunzi ni wasichana kwa sababu 1 - (1/3) = 2/3
Wasichana 20 kwa sababu 30 x (2/3) = <<20=20>>20
40% ya wasichana hawana wanyama kipenzi kwa sababu 100 - 40 - 20 = <<100-40-20=40>>40
Wasichana 8 darasani hawana wanyama kipenzi kwa sababu 20 x .4 = <<20*.4=8>>8