Michael is making a backdrop for the school play. he bought 4 rolls of material to use. he used 27 square feet of material for the backdrop, and had 5 square feet of material left over. how many square feet of material, s, are in each roll?

Two farmers pay a total rent of $140 for a pasture. the first farmer placed $4 oxen in the pasture, and the second farmer placed $30 sheep in the pasture. the farmers split the rent based on the proportion of the pasture eaten by their own animals that month. how much should the first farmer pay, if 1 ox eats as much as 10 sheep in a month?