The marked price of items are same for each company. The marked price of items are:Item I–Rs. 2500, item II–Rs. 1750, item III Rs. 2400, item IV–Rs. 3200. For company C, a discount% of 10% is given on item III while two successive discounts of the equal % was given on item I by company D. Find the successive discount% given by company D if the cost price paid by company C for item III was equal to the cost price paid by company D for item I. Company C made profit on item III while company D suffered loss on item I