The pie chart given below shows the expenditure incurred by a person on 7 articles. The total expenditure of all these 7 articles is 720. Expenditure incurred on a particular article is shown in terms of degree with respect to the total expenditure incurred in all these 7 articles.
What is the ratio of expenditure incurred on article A2 to expenditure incurred on article A7?
1
2 ∶ 3
2
3 ∶ 4
3
4 ∶ 3
4
5 ∶ 3