To find out how much more Antonio's dad paid per gallon last week compared to this week, we first need to calculate the price per gallon for both weeks.
Last week:
- Total gallons = 12 gallons
- Total cost = $35.40
Price per gallon last week: \[ \text{Price per gallon last week} = \frac{35.40}{12} = 2.95 \]
This week:
- Total gallons = 9 gallons
- Total cost = $25.83
Price per gallon this week: \[ \text{Price per gallon this week} = \frac{25.83}{9} = 2.87 \]
Now, we find the difference in price per gallon: \[ \text{Difference} = \text{Price per gallon last week} - \text{Price per gallon this week} \] \[ \text{Difference} = 2.95 - 2.87 = 0.08 \]
Antonio's dad paid $0.08 more per gallon last week than this week.