Which preposition to use with 12

per Occurrences 1%

English Laborer, at 12s per week Weekly Expense $ c. s. d Weekly Expense s. d. $ c for: for: - Food 3 50 = 14 7 Food 7 3 = 1 75 Rent and Taxes 0 67 = 2 9 Rent 1 2 = O 28 Fuel, average of the year O 48 =

Which preposition to use with  12