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

### Instruction:
 Sonia na Joss wanahamia nyumba yao mpya kwenye ziwa. Wana vitu vingi sana katika nyumba yao ya awali na wanachagua kufanya safari nyingi kuhamisha vitu vyote kwenye nyumba mpya. Wanatumia dakika 15 kujaza gari na vitu vyao na dakika 30 kusafiri kutoka nyumba ya awali kwenda nyumba mpya. Bahati nzuri, hawakutumia muda wowote kuhamisha vitu vyao kwenye nyumba mpya. Jumla ya safari walizofanya ni 6 ili kukamilisha uhamisho. Walitumia muda gani kuhamisha?


### Response:
 Walitumia dakika 15/safari + dakika 30/safari = <<15+30=45>>45 dakika/safari.
Walilazimika kufanya safari kwenda nyumba mpya mara 6, hivyo walitumia 45 dakika/safari x 6 safari = <<45*6=270>>270 dakika kusafiri.
Pia walilazimika kurudi nyumbani kwao mara 5 ili kukamilisha uhamisho: 30 dakika/safari x 5 safari = <<30*5=150>>150 dakika.
Jumla yake, walitumia dakika 270 + dakika 150 = <<270+150=420>>420 dakika kusafiri.
Kila saa ina dakika 60 hivyo walitumia dakika 420 ÷ dakika 60/saa = <<420/60=7>>7 masaa jumla.