Comprehension Passage
Direction: Study the following information carefully and answer based on it.
The following bar graph shows the total number of laptops sold by a company over five consecutive years from 2010 to 2014.
If the company aims to achieve an average sale of 320 laptops per year over the six years from 2010 to 2015, what should be the minimum number of laptops sold in 2015?
1
670
2
770
3
870
4
470
5
570