IBPS RRB Officer Scale 1 Model Paper 14

A departmental store receives a shipment of 1500 shirts, for which it pays Rs. 12000. The store sells the shirts at a price 60 percent above the cost for one month, after which it reduces the price of the shirts to 25 percent above the cost. The store sells 72 percent of the shirts during the first month and 50 percent of the remaining shirts after wards. How much gross income did the sales of the shirts generate?