Antonio's dad bought gas for their family's ATV two weeks in a row. Last week, he bought 12 gallons for $35.40. This week, he bought 9 gallons for $25.83. How much more did Antonio's dad pay per gallon last week?

1 answer

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.