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

### Instruction:
 Miriam alitumia dakika 30 kufua nguo, dakika 15 kusafisha bafu, muda fulani kusafisha chumba chake, na dakika 40 kufanya kazi za shule. Ikiwa alitumia jumla ya saa mbili kwenye kazi hizi, alitumia muda gani, kwa dakika, kusafisha chumba chake?


### Response:
 Kuna dakika 60 katika saa, hivyo saa 2 ni dakika 2*60 = <<2*60=120>>120.
Hivyo, alitumia dakika 120 kwenye kazi hizo 4.
Kutoka muda huo, tunaweza kutoa muda alioutumia kwenye kazi nyingine 3: 120 dakika - 30 dakika - 15 dakika - 40 dakika = <<120-30-15-40=35>>35 dakika.