A vegetable vendor supplies vegetables to a housing complex of 50 families. On a particular day, the break-up sale of vegetables is represented in the form of a pie chart as shown.

Study the pie chart carefully and answer the question that follows.

What is the ratio of the central angle corresponding to the sale of potatoes, tomatoes and beans together to the central angle corresponding to the combined sale of onions and others?

13 : 11

central angle corresponding to the sale of potatoes, tomatoes and beans : central angle corresponding to the combined sale of onions and others

\(\frac{80 + 70 + 45 }{400}\) × 360º  :   \(\frac{90 + 75 }{400}\) × 360º  

                             195                       :                  165

                             13                         :                  11