3) A businessman ventures to put up a digital printing shop which caters to printing of t-shirts for any purpose or occasion. He charges PhP 250.00 per t-shirt for printing on a single order of 50 or less t-shirts. A discount of 1% of the original printing charge (or PhP 2.50) is given for each shirt in excess of 50 t-shirts. How many t-shirts will obtain the maximum gross return?

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