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?
The total bill comes to $10 + $13 + $17 = $
<gadget id="calculator">10+13+17</gadget>
<output>40</output>
40.
The total gratuity earned comes to $40 * 0.1 = $
<gadget id="calculator">40*0.1</gadget>
<output>4</output>
4.

<result>4</result>