A faraway planet is populated by creatures called Mizjigs. All Mizjigs are either black-footed or red-footed and either one-headed or two-headed. Ragon, who lives on this planet, does a survey and finds that her colony of
650 contains 120 black-footed, one-headed Mizjigs; 200 red-footed, two-headed Mizjigs; and 300 one-headed Mizjigs.