Cynthia besch wants to buy a rug for a room that is 29 ft wide and 30 ft long. she wants to leave a uniform strip of floor around the rug. she can afford to buy 756 square feet of carpeting. what dimension should the rug have?

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.