Question

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.How many black footed Minzijs are there in Ragons colony?

Answer 1

First, we subtract the total with the total of one-headed to find the total of two-headed

$650-300=350$

There are 350 two-headed-

Then, we subtract to find the two-headed black-footed.

$350-200=150$

There are 150 two-headed black-footed.

Now, we sum to find the total black-footed

$120+150=270$

Hence, there are 270 black-footed in total.