Question

A survey found that 3 out of 100 people have red hair.

On the basis of this survey, how many people in a group of 12,000 people are likely to have red hair?

A.
36

B.
360

C.
4000

D.
3

Answer 1

3/100 = x/12000

Answer 2

Sorry I think my answer was wrong. I agree with kelliegirl33

Answer 3

now cross multiply and solve for x

Answer 4

Let's just analyze it using the first data.
What it basically means is that in a group of a hundred people it's likely to find 3 of them with red hair.
Therefore, that means that it is a 3% or if you like:
\[\frac{ 3 }{ 100 } = a\]
We call "a" the amount of red haired people in any given amount of people, so now we will take a look at the quantity of 12,000, we can calculate it with a rule of three.
we enounce it like: "if in a group of a hundred people, 3 are red haired, how many red haired will it be in 12,000?"
So we will multiply 12,000 by 3 and divide it by 100 to obtain the value we are looking for:
\[\frac{ (12,000)(3) }{ 100 }=\frac{ 36,000 }{ 100 }=360\]

Answer 5

C

Answer 6

not C

Answer 7

owlcoffee just gave you the answer

Answer 8

plz refrain from giving dirext answers\