To buy a car for $36,000 Stacy use your credit card which charges 20% interest and borrowed the restroom and all my bank the charges 4.5% interest if she pays $2178 in interest the first year, how much did she put on her credit card

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.