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.

Passage: In the city, the population was distributed as 21.3% under the age of 18, 14.6% from 18 to 24, 33.2% from 25 to 44, 20.9% from 45 to 64, and 10.0% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 96.5 males. For every 100 females age 18 and over, there were 94.3 males.
How many in percent weren't 18 to 24?

Passage: Johnson again averaged a double-double in the 1985-86 NBA season, with 18.8 points, 12.6 assists, and 5.9 rebounds per game. The 1985-86 Los Angeles Lakers season advanced to the 1986 NBA Playoffs, but were unable to defeat the 1985-86 Houston Rockets season, who advanced to the Finals in five games. In the 1986-87 NBA season, Johnson averaged a career-high of 23.9 points, as well as 12.2 assists and 6.3 rebounds per game, and earned his first NBA Most Valuable Player Award. The 1986-87 Los Angeles Lakers season met the 1986-87 Boston Celtics season for the third time in the 1987 NBA Finals, and in Game 4 Johnson hit a last-second hook shot over Celtics frontcourt Parish and Kevin McHale (basketball) to win the game 107-106. The game-winning shot, which Johnson dubbed his "junior, junior, junior hook shot", helped Los Angeles defeat Boston in six games. Johnson was awarded his third Finals MVP title after averaging 26.2 points on .541 shooting, 13.0 assists, 8.0 rebounds, and 2.33 steals per game.
How many games did the 1987 NBA Finals between the Lakers and Celtics last?

Passage: The desire for a permanent connection across the Limfjord at Aggersund dates back to the early 1900s. In the mid-1920s, citizens in Løgstør reduced a selection, which appeared with a number of suggestions for a bridge. However, the initiative stranded controversy about the alignment and funding. In 1936, the idea was resumed by the Ministry of Employment and Social Affairs and the Ministry of Transport as a possible employment measure, and in 1939 the construction of the bridge, which was funded by Aalborg, Hjørring and Thisted Amter, began. The bridge was projected by Christen Ostenfeld. The initiation took place on 18 June 1942. The bridge cost about 3.5 million DKK. During the German occupation of Denmark, the bridge was strategically important for the German shipments of crew and equipment to and from Norway. Therefore, a military support point was built in 1943-44, consisting of 11 concrete plants on the north side and 6 on the south side. In addition, minefields and other types of barriers were introduced. Two large Flak bunkers on the south side and one on the north side are still available and are available. The other smaller bunkers have either been removed or located in a private area without public access. In 2000, the Aggersund Bridge beams were strengthened, increasing the carrying capacity of the bridge. Coordinates: 56°59′58″N 9°17′38″E﻿ / ﻿56.9995°N 9.2940°E﻿ / 56.9995; 9.2940.

How many more concrete plants were on the north side than the south side?