Study the following table and answer the question.
The table shows the Revenue and Expenditure of companies A and B during the years 2017 to 2020 (in Rs. crores)
|
Year |
Company A |
Company B |
||
|
Revenue |
Expenditure |
Revenue |
Expenditure |
|
|
2017 |
350 |
240 |
420 |
310 |
|
2018 |
400 |
300 |
450 |
320 |
|
2019 |
450 |
275 |
480 |
400 |
|
2020 |
525 |
350 |
540 |
450 |
The average expenditure (per year) of company B during 2017 to 2020 is what percent less than the average revenue of company A during 2017 to 2019?
1
7.5%
2
8.9%
3
3.5%
4
10%