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

### Instruction:
 Kuna wasichana mara tatu zaidi ya wavulana katika darasa la Biolojia. Darasa la Fizikia lina wanafunzi 200. Ikiwa darasa la Biolojia lina nusu ya wanafunzi wa darasa la Fizikia, kuna wavulana wangapi katika darasa la Biolojia?


### Response:
 Darasa la Biolojia lina wanafunzi 200/2=<<200/2=100>>100.
Wavulana katika darasa la Biolojia ni 1/4*100=<<1/4*100=25>>25.