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

### Instruction:
 Jack ana shamba lenye miti 4 kwa 5. Inachukua dakika 6 kusafisha kila mti. Anapata msaada wa kusafisha miti hivyo inachukua nusu ya muda. Alitumia muda gani kusafisha miti?


### Response:
 Kulikuwa na miti 4*5=<<4*5=20>>20 ya kusafisha.
Hivyo ilichukua 6*20=<<6*20=120>>120 dakika.
Hiyo ni sawa na 120/60=<<120/60=2>>2 saa.
Hivyo, alitumia 2/2=<<2/2=1>>1 saa kusafisha.