Answer:
BS = 9
Explanation:
△BCU ~ △STU
- So the ratio of the length of sides is proportional:
Statements: CU/TU = BU/SU
6/18 + 6 = BU/12
6/24 = BU/12
Now:
2BU = 6
BU = 3
SU = BU + BS
12 = 3 + BS
Step-by-step explanation (2):
Similar triangles:
Let:
BS = x
BU = 12 - x
TU = TC + CU = 18 + 6 = 24 units
Statements: BU/SU = CU/TU
12 - x/12 = 6/24 ---> 12 - x/12 = 1/4
-4x = 12 - 48
BS = 9
Hope it helps!