Linear Programming Problem

A shipping company ships products using a cargo ship. The ship has 3 different storage units: front, center and the rear. Each storage unit has the following restrictions on both weight and space: To maintain the balance of the ship in water, weight stored in the front storage unit should not exceed 30% of the total weight of materials stored on the ship. Same restriction holds for the rear storage unit. There are 4 different types of material that are available to be shipped on the next voyage:Formulate a linear program to find out how much of each material should be shipped and how it should be distributed on the ship so that the profit is maximized