Pianni Beverages produce two ready-mixed cocktail drinks; the Zombie and the Skyjack. Each is a mixture of vodka, vermouth and ginger. It takes 3 litres of vodka, 6 litres of vermouth and 1 litre of ginger to make 10 litres of Zombie, and 5 litres of vodka, 3 litres of vermouth and 2 litres of ginger to make 10 litres of Skyjack. The company makes £15 profit per 10 litres of Zombie and £20 profit per 10 litres of Skyjack. The maximum available supplies per day are: 1500 litres of vodka, 1500 litres of vermouth and 400 litres of ginger. How much of each cocktail should be made to maximize profit per day, and what is the maximum profit per day it can make?