The question consists of four statements numbered I, II, III, and IV given below it. You have to decide that the data provided in which of the following statement alone is not sufficient to answer the question.
A shopkeeper has two articles 'A' and 'B'. Find the cost price of article 'A'.
Statement I : The cost price of article 'A' is Rs.300 more than that of article 'B' and if article 'A' is sold at a profit of 20% and article 'B' is sold at 30% profit then the total profit earned is Rs.310.
Statement II : Average selling price of article 'A and article 'B' together is Rs.620 and the ratio of the cost price of 'A' to 'B' is 8 : 5 respectively and the loss incurred on selling article 'A' is 20% which is same as the profit earned on selling article 'B'.
Statement III : Article 'B' is sold at 24% profit and the overall profit earned on selling both articles is 40%. The selling price of both the articles together is Rs.1820 and the selling price of article 'B' is Rs.620.