The following bar chart shows the number of bottles of green and red colours sold by 5 different shops.
What is the ratio of the total number of green bottles sold by the 5 shops taken together to the total number of red bottles sold by the 5 shops taken together?
1
3 ∶ 5
2
6 ∶ 11
3
4 ∶ 7
4
5 ∶ 7