If gasoline sells for $1.25 per gallon, how much would 3 3/5 gallons cost? express your answer as a decimal

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3 3/5 gallons of gasoline would cost $4.50

This is because when you multiply 1.25 by 3 you get a product of 3.75.

Then, you multiple 1.25 with 3/5 and get a product of 0.75.

Add the two together, and you receive a sum of 4.50.

So, the cost for 3 3/5 gallon is $4.50.