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

### Instruction:
Janet has a business selling custom collars for dogs and cats. If it takes 18 inches of nylon to make a dog collar and 10 inches to make a cat collar, how much nylon does she need to make 9 dog collars and 3 cat collars?

### Response:
 Kwanza tafuta jumla ya urefu wa nyuzi zinazotumiwa kwa mikufu ya mbwa: 18 nyuzi/mkufu wa mbwa * 9 mikufu ya mbwa = 162 nyuzi
Kisha tafuta jumla ya urefu wa nyuzi zinazotumiwa kwa mikufu ya paka: 10 nyuzi/mkufu wa paka * 3 mikufu ya paka = 30 nyuzi
Kisha ongeza nyuzi zote zinazohitajika ili kupata jumla ya nyuzi zinazohitajika: 162 nyuzi + 30 nyuzi = <<162+30=192>>192 nyuzi