In art class, kim is mixing paint. the paint mixture is 3 parts yellow and 5 parts blue. what percent of the paint is yellow? question 1 options: 60% 30% 37.5%

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?