Plz help due tomorrow

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

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?