Answer:
a) There are 2.112 million people with violet eye color in the world.
b) 0.6459% of the United States population would have these violet eyes.
Step-by-step explanation:
a)Approximately how many people in the whole world have violet eyes?
This can be solved as a rule of three problem.
0.03% of the worlds population have this eye color. It means that for each 10000 people, 3 of them have violet eye color. We want to know how many people among 7.04 billion have violet eye color, so:
3 people with violet eye color - 10000 people
x people with violet eye color - 7040000000 people
[tex]x = \frac{3*7040000000}{10000}[/tex]
x = 2.112 million
There are 2.112 million people with violet eye color in the world.
b) Now what percent of the the population in the United States would have these violet eyes?
If all people with violet eyes were in the United States, they would be 2.112 million among 327 million. How much of is 2.112 of 327. So:
x - 100
2.112 - 327
[tex]x = \frac{211.2}{327}[/tex]
[tex]x = 0.6459[/tex]
0.6459% of the United States population would have these violet eyes.
