Archy bought 15 gallons of gas for $23.85. Joe bought 16 gallons of gas for $24.48. who paid less per gallon?

Archy: 15 gallons ... $23.85

1 gallon ... $ x = ?

x * 15 = 1 * 23.85 / 15

x = 23.85 / 15

x = $1.59 per gallon

Joe: 16 gallons ... $24.48

1 gallon ... $ y = ?

y * 16 = 1 * 24.48 / 16

y = 24.48 / 16

y = $1.53 per gallon

Result: Joe paid less per gallon.