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

### Instruction:
Kevin has been for a run and wants to calculate how far he traveled. He ran at 10 miles per hour for half an hour, 20 miles per hour for half an hour, then ran at 8 miles per hour for 15 minutes. How many miles has Kevin run?

### Response:
 Kwa kasi yake ya kwanza, Kevin alisafiri maili 10 kwa saa * 0.5 saa = <<10*0.5=5>>5 maili.
Kwa kasi yake ya pili, alisafiri maili 20 kwa saa * 0.5 saa = <<20*0.5=10>>10 maili.
Dakika 15 ni robo ya saa, kwa hivyo kwa kasi yake ya tatu, alisafiri maili 8 kwa saa * 0.25 saa = 2 maili.
Kwa hiyo, Kevin amesafiri jumla ya maili 5 + 10 + 2 = <<5+10+2=17>>17.