A cottage industry manufactures pedestal lamps and wooden shades, each
requiring the use of a grinding/cutting machine and a sprayer It takes 2 hours on
grinding/cutting machine and 3 hours on the sprayer to manufacture a pedestal
lamp It takes 1 hour on the grinding/cutting machine and 2 hours on the sprayer
to manufacture a shade On any day, the sprayer is available for at the most 20
hours and the grinding/cutting machine for at the most 12 hours