Answer:
9
Step-by-step explanation:
Let Benjamin's age be=x.
Let Lucas's age be=y.
Then, x=2y-6
When x=12, 12+6=2y.
18/2=y, y=9
About 50k
c. overcome difficult terrain
Answer: where’s the question at?
Step-by-step explanation:reword it so i can understand and i’ll try to help