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? Let's think first. Chain of thought:
The total bill comes to $10 + $13 + $17 = $40. The total gratuity earned comes to $40 * 0.1 = $4.
Therefore, the answer is 4.