This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning). 
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.

[Q]: Passage: As of the census of 2000, there were 18,812 people, 7,402 households, and 5,477 families residing in the county.  The population density was 55 people per square mile (21/km²).  There were 10,319 housing units at an average density of 30 per square mile (12/km²).  The racial makeup of the county was 51.45% Race (United States Census), 41.90% Race (United States Census) or Race (United States Census), 0.20% Race (United States Census), 0.66% Race (United States Census), 0.04% Race (United States Census), 0.82% from Race (United States Census), and 0.92% from two or more races.  2.16% of the population were Race (United States Census) or Race (United States Census) of any race.
[A]: How many households and families are in the county according to the census?


[Q]: Passage: Greece has universal health care. In a 2000 World Health Organization report, its health care system ranked 14th in overall performance of 191 countries surveyed. In a 2013 Save the Children report, Greece was ranked the 19th best country (out of 176 countries surveyed) for the state of mothers and newborn babies. In 2010, there were 138 hospitals with 31,000 beds in the country, but on 1 July 2011, the Ministry for Health and Social Solidarity (Greece) announced its plans to decrease the number to 77 hospitals with 36,035 beds, as a necessary reform to reduce expenses and further enhance healthcare standards. Greeces healthcare expenditures as a percentage of GDP were 9.6% in 2007 according to a 2011 OECD report, just above the OECD average of 9.5%. The country has the largest number of doctors-to-population ratio of any OECD country.
[A]: How many countries ranked better than Greece according to the Save the Children report?


[Q]: Passage: Income inequality has become a hotly debated topic globally. According to the CIA World Factbook, U.S. income inequality ranked 41st highest among 156 countries in 2017 (i.e., 74% of countries have a more equal income distribution). According to the Congressional Budget Office, the top 1% of income households earned about a 9% share of the pre-tax income in 1979, versus 19% in 2007 and 17% in 2014. For after-tax income, these figures were 7%, 17%, and 13%, respectively. These figures indicate the share of income earned by top earners more than doubled between 1979 and 2007, then fell somewhat following the Great Recession, and the higher tax rates and re-distributive policies applied by President Barack Obama in 2013 (i.e., expiration of the Bush Tax Cuts for the top 1% and subsidies for lower income persons via the Affordable Care Act). Recasting the 2012 income using the 1979 income distribution (representing the more egalitarian 1950-1980 period), the bottom 99% of families would have averaged about $7,100 more income. Income inequality in the United States has grown from 2005 to 2012 in more than 2 out of 3 metropolitan areas.
[A]:
How many more percentages did the top 1% of income households earn pre tax of 19% in 2007 than 9% in 1979?