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 a new building (E) is constructed with the same total number of flats as Buildings B and C combined, and the percentage of vacant flats in Building E is the average of the percentages in Buildings B and D, how many vacant flats will Building E have?
1
140
2
150
3
200
4
230
5
55