If there are 15 puppies 12 kittens and 6 rabbits in a pet store than what animals are in a 5 to 2 ratio

Im literally having a mental breakdown

Me n o w. i need t h i s. 10 points

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.