A shopkeeper decided to sell an equal number of tables and chairs at the same cost price. He gets Rs. 2400 more profit on the sale of tables than the sale of chairs and the selling price of a chair is Rs.6000. The shopkeeper offers a 20% discount on the marked price of the chair and the shopkeeper offers two successive discounts of 10% and 4% on the marked price of the table. If the marked price of a table and chair is equal and the cost price of a chair is Rs.2250, then find how much total discount he gave on the sale of tables and chairs?