Randy has some money. He spent $10 buying his lunch. He spent a quarter of the money he had left on an ice cream cone. If the ice cream cone cost $5, what is the amount of money, in dollars, Randy had at first?
Randy has 5*4=<T>multiply(5, 4)=20 dollars left after buying lunch.
Randy had 20+10=<T>add(20, 10)=30 dollars at first.
