Rio Coffee Shoppe sells two coffee drinksa regular coffee and a latte. The two drinks have the following prices and cost characteristics: Regular Coffee Latte Sales price (per cup) $ 1.50 $ 2.40 Variable costs (per cup) 0.70 1.50 The monthly fixed costs at Rio are $5,740. Based on experience, the manager at Rio knows that the store sells 80 percent regular coffee and 20 percent lattes. Required: How many cups of regular coffee and lattes must Rio sell every month to break even?