Gayana's recipe uses 5 cups of sugar to make 12 1/2 dozens of cupcakes. paris's recipe uses 4 1/4 cups of sugar to make 14 3/4 dozens cupcakes. whose recipe uses more sugar?

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.