Answer:
x = 2
CB = 4
BD = 8
Explanations:
B is the point between C and D
This can be expressed diagramatically as:
CB = 2x
BD = 4x
CD = 12
Note: CB + BD = CD
2x + 4x = 12
6x = 12
x = 12 / 6
x = 2
To get the length of each segment:
CB = 2x
CB = 2(2)
CB = 4
BD = 4x
BD = 4(2)
BD = 8