Can someone answers this question please master it correctly if it’s corect I will mark you brainliest

Answer:
21 people picked green
Step-by-step explanation:
Out of 12 people, 3 people picked green
3/12 = simplify as 1/4
1/4 = x/84 Cross multiply
4x = 84 Divide 4 on boths sides
x = 21