Consider a person who lives for three periods. She must choose between going to school in the first period or going immediately to work. If she goes to school, he earns nothing in the first period, but he earns $144 in each of the next two periods. If she goes straight to work, she earns $72 for each of the periods. She discounts future earnings at the rate r = .20, and there are no other costs or benefits associated with schooling or work.

Based solely on the monetary values, calculate choice she should make. Show your work.