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

### Instruction:
 Katika wiki fulani, mgahawa wa Fatima ulihudumia watu 25 chakula na vinywaji, na 3/5 ya idadi hiyo walikuja kununua kahawa. Watu wangapi hawakununua kahawa katika mgahawa?


### Response:
 Idadi ya wateja ambao walihudumiwa kahawa katika mgahawa ni 3/5*25 = <<3/5*25=15>>15
Ikiwa idadi jumla ya wateja ambao walikuja mgahawani ilikuwa 25, basi wateja 25-15 = <<25-15=10>>10 hawakununua kahawa.