Gemma ordered four pizzas at $10 each, and she gave a $5 tip to the delivery person. How much change did she get back if she gives one fifty-dollar bill?
The cost of the four pizzas is 4 x $10 = $
<gadget id="calculator">4*10</gadget>
<output>40</output>
40.
The total cost, including the tip, is $40 + $5= $
<gadget id="calculator">40+5</gadget>
<output>45</output>
45.
Therefore, Gemma gets a change of $50 - $45 = $
<gadget id="calculator">50-45</gadget>
<output>5</output>
5.

<result>5</result>