A recipe for fruit-juice punch calls for 1 part tropical fruit-punch and 2 parts ginger ale. If a person wants to make 5 gallons
(20 quarts) of fruit-juice punch, how many quarts of each
ingredient are needed?

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?