1-1 Which brand does demonstrate the highest conversion rate from search to sales?

1-2 For 'C' brand, in which market does it have to improve its search to sales conversion rate with priority?

Question 1. Brand A, B & C are selling all their products through off-line stores in X, Y & Z markets. (30 points) Search index Sales units Market&Brand A B C A B C X 25 10 65 400 100 500 Y 30 20 50 150 100 250 Z 20 30 50 40 20 140