I already have the answer for x but is this complementary or supplementary

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

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?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd