An enterprise aiming to produce low and high quality varnish plans not to produce by mixing 121 barrels of alcohol and 49 barrels of resin in certain compositions. One barrel of low quality varnish will consist of 80% alcohol and 20% resin, one barrel of high quality varnish will consist of 30% alcohol and 70% resin. The firm will sell 50,000 units per barrel of low quality varnish and 8,000 units per barrel of high quality varnish. Formulate the problem in a way that maximizes benefit.