question: In the county, the population was spread out with 22.7% under the age of 18, 9.0% from 18 to 24, 28.9% from 25 to 44, 26.7% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 37.8 years. For every 100 females, there were 115.9 males. For every 100 females age 18 and over, there were 127.5 males.
Answer this question: Which age groups each made up over 20% of the population?
answer: under the age of 18

question: The health sector comprises 17 specialized hospitals and centers, 4 regional diagnostic and treatment centers, 9 district and 21 aimag general hospitals, 323 soum hospitals, 18 feldsher posts, 233 family group practices, 536 private hospitals, and 57 drug supply companies/pharmacies. In 2002, the total number of health workers was 33,273, of whom 6823 were doctors, 788 pharmacists, 7802 nurses, and 14,091 mid-level personnel. At present, there are 27.7 physicians and 75.7 hospital beds per 10,000 inhabitants.
Answer this question: How many aimag general hospitals and soum hospitals does the health sector comprise of?
answer: 344

question: As of the Fall 2017 quarter, Louisiana Tech had an all-time record high enrollment of 12,873 students pursuing degrees in five academic colleges. The student body has members from every Louisiana parish, 47 U.S. states, and 64 foreign countries. Louisiana residents account for 85.0% of the student population, while out-of-state students and international students account for 11.1% and 4.0% of the student body, respectively. The student body at Louisiana Tech is 69.4% white, 13.3% black, 3.8% international students, and 13.5% other or "unknown" ethnicity. The student body consists of 50.2% women and 49.8% men.
Answer this question: How many percent of the student population are not Louisiana residents?
answer:
15