Directions: The following line graph shows the profit percentage and discount percentage of the five different articles A, B, C, D, and E.

Note:
i) x² - 5x – 50 = 0 (consider positive root value only) 
ii) The selling price of article B is Rs.460 and the marked price of article B is Rs.575.
iii) Cost prices of articles B and A are in the ratio 2: 1. 
iv) The average cost price of all the articles is Rs.400.
v) The sum of the cost price of the articles D and E is Rs.1100
vi) The cost price of article E is Rs.100 more than that of article D