Two businesses, X and Y, each dump 20 tonnes of pollution into a creek. In an effort to reduce pollution, the government will now require businesses to have a pollution permit to dump pollutants in the creek. Each business receives 10 pollution permits and they can use it to pollute or sell it to the other business (but lose the ability to pollute). To reduce pollution it costs business X $100 per tonne of pollutant eliminated and it costs business Y $50 per tonne of pollutant eliminated. If the government does NOT allow the businesses to trade these permits, the total cost of reducing pollution will be ______ , and if the government ALLOWS business to buy and sell permits, the total cost of reducing pollution will be ______