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?

5 : 7

Total number of green bottles sold   :   Total number of red bottles sold

( 45 + 53 + 58 + 63 + 31 )  :   ( 71 + 68 + 55 + 69 + 87 )

                   250                :             350

                    5                  :               7