
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A truck delivers goods from a supermarket. It first travels 30km south to reach Unit A, then continues 20km south to reach Unit B. After returning to the supermarket, it delivers goods to Unit C, which is 15km north, three times before returning to the supermarket to rest.  
(1) How far is Unit C from Unit A?  
(2) How many kilometers did the truck travel in total?

Present the answer in LaTex format: \boxed{Your answer}
user