A candy manufacturer uses 2 machines to produce large and small bars of candy. Machine A can make 50 large bars per hour and 60 small bars per hour. Machine B can make 60
large and 80 small bars per hour. To be prepared for the next day's production, neither
machine can operate for more than 20 hours each day. The manufacturer wants to produce
at most 1600 large bars and at least 1840 small bars a day. Let x = # hours for Machine A
and y = # hours for Machine B.