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

### Instruction:
 Trey ana kasa za kobe mara tano ya Kris. Kris ana kasa za kobe robo ya Kristen. Kuna kasa ngapi za kobe jumla ikiwa Kristen ana kasa 12?


### Response:
 Kris ana kasa 12/4 = 3 za kobe.
Trey ana kasa 3*5 = <<3*5=15>>15 za kobe.
Jumla yao ni 12+3+15 = <<12+3+15=30>>30 za kobe.