A professor of economics at a small Texas university wanted to determine what year in school students were taking his tough economics course. Shown below is a pie chart of the results. What percentage of the class took the course prior to reaching their senior year? 
Definitions:
Government Officials
Individuals appointed or elected to positions of authority within government structures to oversee and implement laws and policies.
Mortgage Payments
Regular payments made towards a loan taken to purchase property, typically consisting of principal and interest components.
Down Payments
An initial payment made when purchasing something on credit, representing a portion of the total price, with the balance to be paid over time.
Foreign Corrupt Practices Act
A U.S. law that prohibits American companies and their employees from bribing foreign officials to gain a business advantage.
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