Answer:
360 people out of 1200 are likely to have red hair.
Step-by-step explanation:
So I just saw that 100 x 120 equals 1200. So I just need to multiply 3 x 120 and I got 360. I think this is how to solve?
Let
be the side of the triangle and
be the side of the square.
Let
be the perimeter of the triangle and
be the perimeter of the square.
We have the following relationship:

Which finally implies

The correct answers are angles FED and E.