Apunch recipe says 2 mix 4 cups pineapple juice, 8 cups orange juice and 12 cups seltzer in order to make 18 servings of punch. how many cups of each you need to make 108 cups of punch?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.