A shopkeeper planned to sell 150 shirts each priced at Rs 1,250 in a particular year. Each shirt, if it had been sold at the mentioned price would have been possibly earned him a 25% profit. However, 50 out of these 150 shirts were sold at a discount of Rs 150 each shirt during the festival season. Find the maximum possible number of shirts one could have bought during the festival season with an amount that is same as the profit earned by the shopkeeper in the entire year?