Apizza shop sells small 6 in. pizzas and medium 12in. pizzas. should the medium pizzas cost twice as much as the small pizzas because they are twice the size? explain

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.