In the first 4 hours, the milk tanker got 4 hours * 2880 gallons/hour = <<4*2880=11520>>11,520 gallons

Thus, the storage tank was left with 30,000 gallons - 11,520 gallons = <<30000-11520=18480>>18,480 gallons.

For the next 7 hrs, the workers added 1,500 gallons/hour * 7 hours = <<1500*7=10500>>10,500 gallons

The total therefore is 18,480 gallons + 10,500 gallons = <<18480+10500=28980>>28,980 gallons

# Answer

28,980
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
This morning, farmer Rita's workers collected 30,000 gallons of milk and chilled it in a storage tank. They then spent the next 4 hours pumping milk at a rate of 2,880 gallons/hour from the storage tank into a milk tanker. For the next 7 hours, the workers added more milk into the storage tank, at a rate of 1,500 gallons per hour. How many gallons of milk were left in the storage tank?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
28,980
This morning, farmer Rita's workers collected 30,000 gallons of milk and chilled it in a storage tank. They then spent the next 4 hours pumping milk at a rate of 2,880 gallons/hour from the storage tank into a milk tanker. For the next 7 hours, the workers added more milk into the storage tank, at a rate of 1,500 gallons per hour. How many gallons of milk were left in the storage tank?
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