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

### Instruction:
Tyson can swim at a speed of 3 miles per hour in a lake and 2.5 mph in an ocean. This season, half his races happened in lakes and half his races happened in the ocean. He had ten total races, each of which was 3 miles long. How much time did he spend in his races?

### Response:
 Katika maziwa, Tyson alishindana kwa maili 3 kwa kasi ya 3 mph, hivyo alitumia 3 / 3 = <<3/3=1>>1 saa kumaliza kila mashindano.
Katika bahari, alishindana kwa maili 3 kwa kasi ya 2.5 mph, hivyo alitumia 3 / 2.5 = <<3/2.5=1.2>>1.2 saa kumaliza kila mashindano.
Alishindana mara 5 katika maziwa, kwa jumla ya masaa 5 * 1 = <<5*1=5>>5 katika mashindano ya maziwa.
Alishindana mara 5 katika bahari * 1.2 masaa kwa kila mashindano ya bahari = <<5*1.2=6>>6 katika mashindano ya bahari.
Alitumia jumla ya masaa 5 katika mashindano ya maziwa + 6 katika mashindano ya bahari = <<5+6=11>>11 katika mashindano.