Matteo writes a cooking blog. at a certain point, he has 8,435 followers. then the following events happen, in order: 68 people stop following matteo's blog. 641 people start following matteo's blog. the number of followers triples. use the drop-down menus to complete the sentences below.

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.