Comprehension Passage
Directions: Answer the questions based on the information given below.
The table given below shows the number of society members living in four different directions - 'North', 'East', 'West' and 'South' of four different buildings - 'P', 'Q', 'R' and 'S'.
| Building | North | East | West | South |
|---|---|---|---|---|
| P | 182 | 187 | 173 | 178 |
| Q | 162 | 181 | 194 | 163 |
| R | 183 | 149 | 156 | 162 |
| S | 133 | 183 | 157 | 147 |
Find the ratio between the average number of members living in 'West' direction of buildings 'Q', 'R', and 'S' and the total number of members who are living in all four directions of building 'R'?
1
13 : 20
2
13 : 25
3
13 : 40
4
13 : 50
5
13 : 60