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%? Think carefully first, then make a decision:
Initially, Lizzy had $30; she loaned out $15 so she has $30 - $15 = $15 left. Her friend is returning the $15 with 20% interest for a total of $15 + ($15 * (20 / 100)) = $18. Lizzy will now have $15 + $18 = $33. So, the answer is 33.