user: Julio makes a mocktail every evening.  He uses 1 tablespoon of lime juice and tops with 1 cup of sparkling water.   He can usually squeeze 2 tablespoons of lime juice per lime.  After 30 days, if limes are 3 for $1.00, how much will he have spent on limes? Let's think step by step and output the final answer after "####".
Answer: 5