The cost price of article X is Rs. P and it is sold after a discount of 20% thus earning a profit of a%. The cost price of Y is Rs. Q sold after a discount of 25% thus earning a profit of (2a + 30)%. The marked price of both articles is the same and the cost price of X is 50% more than that of Y. Find the selling price of another article if its cost price is Rs. 2400 and sold at (2a + 10)% profit (approx value)