A manufacturer produces two types of bottled coffee drinks: cappuccinos and cafés au lait. Each
bottle of cappuccino requires 6 ounces of coffee
and 2 ounces of milk and earns a profit of $0.40.
Each bottle of café au lait requires 4 ounces of
coffee and 4 ounces of milk and earns a profit of
$0.50. The manufacturer has 720 ounces of coffee
and 400 ounces of milk available for production
each day. To meet demand, the manufacturer
must produce
at least 80 coffee drinks each day.
Let x = the number of cappuccino bottles and y=
the number of café au lait bottles.