The volume of a fish tank is 40 cubic feet. If the density is 0.4, how many fish are in the tank?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

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?

How many square centimeters of wrapping paper will be used to wrap the shoe box?