Which is the order of 17.639, 3.828, 45.947

Just tell me how to set up the equation.

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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.