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

### Instruction:
Leticia, Scarlett, and Percy decide to eat at a Greek restaurant for lunch. The prices for their dishes cost $10, $13, and $17, respectively. If the trio gives the waiter a 10% tip, how much gratuity should the waiter receive in dollars?

### Response:
 Jumla ya bili ni $10 + $13 + $17 = $<<10+13+17=40>>40.
Hongera inafikia $40 * 0.1 = $<<40*0.1=4>>4.