One photo shop charges $0.36 per print. another photo shop charges $2.52 plus $0.08 per print. juan finds that the cost of developing his photos is the same at either shop. how many photos does juan have to develop

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?