Comprehension Passage
Directions: Answer the questions based on the information given below.
The table given below illustrates the number of ACs sold by four different companies in two different consecutive years 2015 and 2016.
| Company | Number of ACs sold in 2015 | Number of ACs sold in 2016 |
|---|---|---|
| L | 240 | 160 |
| M | 1120 | 800 |
| N | 960 | 480 |
| O | 640 | 160 |
If the respective ratio of the number of ACs sold by company 'V' in 2015 to that by company 'O' in the same year is 7:8 then what is the average number of ACs sold by companies 'V', 'L', 'M', and 'N' together in 2015?
1
720
2
760
3
780
4
800
5
820