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?
Randy has 30-10=<<30-10=20>>20 dollars left after buying lunch.
Randy spent 20/4=<<20/4=5>>5 dollars on the ice cream cone.
Randy has 20-5=<<20-5=15>>15 dollars left.
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