Comprehension Passage
Directions: Read the data carefully and answer the following questions.
The following table shows the number of public sector employees living in a building, the ratio of public to private sector employees, and the percentage of vacant flats in the building.
| Building | Public Sector Employees | Ratio (Public : Private) | % of Vacant Flats |
|---|---|---|---|
| A | 120 | 3 : 2 | 20% |
| B | a | 3 : 5 | 20% |
| C | 90 |
2:3 |
25% |
| D | 2a | 5 : 4 | 55% |
Note:
1) The total number of flats in each building is equal to the sum of public sector employees, private sector employees, and vacant flats.
2) The total number of public sector employees in all buildings together is 300.
If 75% of the vacant flats in Building D are converted into community halls and 33.33% of the remaining vacant flats are then converted into small offices, how many flats remain vacant in Building D?
1
14
2
15
3
26
4
17
5
22