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)	$	1.40		$	2.80
Variable costs (per cup)		0.70			1.70

The monthly fixed costs at Rio are $5,616. 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?