1/2 probability because 30 is half of 60.
This question is incomplete add context and I’ll be able to answer it probably
The ratio of group 1 to group 2 to total is 4:7:11.
4:7:11= x:y:33
11*3=33
Multiply the other numbers by 3 to get the answers for x and y.
x= 4*3=12
y= 7*3=21
Final answer: Group One-12, Group Two-21
The answer: the second one y= -2x+7