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?
How much does the gas cost? ** Gas is $3.00 a gallon and they buy 10 gallons of gas so that's 3*10 = $<<3*10=30.00>>30.00
How much is the cashback? ** 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
How much did they spend? ** 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
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