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

### Instruction:
 Tom ameamua kwenda kwenye safari. Wakati wa safari hii, anahitaji kuvuka ziwa, ambalo kwa upande mmoja linachukua masaa 4. Wakati huu, Tom anahitaji msaidizi wa kumsaidia kuvuka. Kukodi msaidizi gharama $10 kwa saa. Tom atalazimika kulipa kiasi gani kwa msaada wa kuvuka ziwa mara mbili?


### Response:
 Kuvuka ziwa mara mbili (kwenda na kurudi) kutachukua masaa 4 * 2 = <<4*2=8>>8.
Hivyo Tom atalazimika kulipa msaidizi 8 * 10 = $<<8*10=80>>80.