Janata Garments Ltd. (JGL) has specific sales targets for alL its sales managers. One of the managers Mr. Dhiman has a sales target of taka 50 million per quarter. Accounts show that during the first three quarters he has sold taka 10, 15, and 20 million worth of goods respectively. How much in taka should Mr. Dhiman sell during the fourth quarter in order to maintain the average sales target?