The following table gives the sales of an electronic chip over 5 years. Find the year in which the sales are equal to the average of the sales over the 5 years.
|
Year |
2015 |
2016 |
2017 |
2018 |
2019 |
|
Sales (In thousands of rupees) |
45 |
54 |
57 |
60 |
69 |
1
2018
2
2015
3
2017
4
2016