Roxanne bought 2 cups of lemonade for $2 each and 2 sandwiches for $2.50 each. How much change must she get from a $20 bill?
Two cups of lemonade amount to $2 x 2 = $
<gadget id="calculator">2*2</gadget>
<output>4</output>
4.
Two sandwiches amount to $2.50 x 2 = $
<gadget id="calculator">2.5*2</gadget>
<output>5</output>
5.
So, the total amount that Roxanne had to pay was $4 + $5 = $
<gadget id="calculator">4+5</gadget>
<output>9</output>
9.
Thus, her change must be $20 - $9 = $
<gadget id="calculator">20-9</gadget>
<output>11</output>
11.

<result>11</result>