A travel agnecy offers 4 different vacation packages to Europe. Their net profit for package 1 is 300, for package 2 it is 450, for package 3 it is 600, for package 4 it is 1000. From past experience they know that 30% of their customers purchase package 1, 25% of their customer purchase package 2, 20% of their customers purchase package 3 and 25% of their customers purchase package 4. Find the expected value or average profit per customer.