Reconstruct a question, answer pair from this explanation: Randy has 30 - 10 = 20 dollars left after buying lunch. Randy spent 20 / 4 = 5 dollars on the ice cream cone. Randy has 20 - 5 = 15 dollars left.
Q:Randy has $30. He spent $10 buying his lunch. He spent a quarter of the money he had left on an ice cream cone. What is the amount of money, in dollars, Randy has left?
A:15