You have a container that you want to put on a ship from China to the US. The container has a volume of 2500 gallons, and can carry 1500 pounds. You have a budget of $2000 to load merchandise. In the following table you have the cost of each item (in US dollars) in China, its selling price in the US, its volume and weight. You must spend between $300 and $800 on each item. Maximize profit (not selling price). The number of items does not have to be integer.

	item 1	item 2	item 3	item 4
Cost	$ 3.00	$ 5.00	$ 2.50	$ 4.00
price	$ 4.20	$ 6.40	$ 3.00	$ 5.20
volume	4	6	3	5
weight	2	3	2	4

What is your profit?

1. How many units of item 1 do you put in the container?
2. many units of item 2 do you put in the container?
3. How many units of item 3 do you put in the container?
4. How many units of item 4 do you put in the container?
5. What is the total purchasing cost?
6. What is the total revenue from sales?
7. How much volume do you use?
8. How much weight do you use?
9. How much money do you spend on item 3?