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

### Instruction:
 Siku fulani, mwalimu wa Rose alisoma daftari na kugundua kulikuwa na wasichana mara mbili ya idadi ya wavulana waliohudhuria siku hiyo. Darasa lina wanafunzi 250, na wasichana wote 140 walikuwepo. Ikiwa wanafunzi wote wasiohudhuria ni wavulana, wavulana wangapi walikuwa hawajahudhuria siku hiyo?


### Response:
 Jumla ya wanafunzi katika darasa ni 250.
Idadi ya wasichana waliohudhuria ni 140.
Idadi ya wavulana waliohudhuria ni 140/2=<<140/2=70>>70.
Idadi ya wavulana wasiohudhuria ni 250-70=<<250-70=180>>180.