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?
629,999 =630,000. Nearest hundred
I am attaching an image with the two solutions represented by the blue areas highlighted in your original graphs. Let me know if you have questions.