Answer parts A and B- If you give a full explanation I will give brainliest, 5 stars, and thanks! Do your work on a piece of paper on a number line for part B then take a picture.

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.