A container is 18 full of water. After 10 cups of water are added, the container is 34 full. What is the volume of the container, in cups?
Two 600 mL pitchers contain orange juice. One pitcher is 1/3 full and the other pitcher is 2/5 full. Water is added to fill each pitcher completely, then both pitchers are poured into one large container. What fraction of the mixture in the large container is orange juice?