Lizzy had $30. She loaned out $15 to her friend. How much will Lizzy have if her friend returned the money with an interest of 20%?
Initially, Lizzy had $30; she loaned out $15 so she has $30-$15 = $
<gadget id="calculator">30-15</gadget>
<output>15</output>
15 left.
Her friend is returning the $15 with 20% interest for a total of $15+($15*(20/100)) = $
<gadget id="calculator">15+15*(20/100)</gadget>
<output>18</output>
18.
Lizzy will now have $15+$18 = $
<gadget id="calculator">15+18</gadget>
<output>33</output>
33.

<result>33</result>