A man has 
invested in three properties. One earns 12%, one 10%, and one 8%. His annual income from the properties is 
and the amount invested at 8% is twice that invested at 12%. What is the annual income from each property?
Definitions:
Aggregate U.S. Health Care Spending
The total amount of money spent on health care services in the United States over a specified period.
GDP
Gross Domestic Product; the total market value of all goods and services produced within a country in a specific time period.
U.S. Health Care System
A complex organization of doctors, hospitals, insurance companies, and regulatory agencies providing health care services within the United States.
Financing Of Health Care
The methods and sources for funding the operation of healthcare systems and services.
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