11 2 mixed number as an improper fraction

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?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m