Beach Cruises prints brochures and fliers
to advertise their dolphin watching tours.
To print, the brochure requires three
pages while the flier requires two. They
are limited to 500 sheets of paper, but
need to print at least 80 brochures and
100 fliers. Each brochure costs 10¢ to
print and each flier costs 6¢ to print.
How many of each should they print
to minimize their cost?