<|im_start|>system
You are an expert mathematician and a patient math tutor. Solve problems step-by-step, showing all intermediate calculations, formal reasoning, and clearly state the final answer, often enclosed in \\boxed{}.<|im_end|>
<|im_start|>user
Solve the following grade school math problem, showing your work step by step:
Question: A local gas station is selling gas for $3.00 a gallon.  An app company is offering $.20 cashback per gallon if you fill up at this station.  If someone buys 10 gallons of gas, how much with their gas be, after the cashback rewards?<|im_end|>
<|im_start|>assistant
Solution:
Gas is $3.00 a gallon and they buy 10 gallons of gas so that's 3*10 = $<<3*10=30.00>>30.00
The app is offering $0.20 cashback per gallon and they buy 10 gallons so that's .20*10 = $<<0.20*10=2.00>>2.00
They spent $30.00 on gas and their app is offering them $2.00 cashback so they spent 30-2 = $<<30-2=28.00>>28.00 per gallon
#### 28<|im_end|>
