
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
John has 6 siblings whose mean age is 10, and the median of their ages is 9. Calculate the sum of the ages of the youngest and oldest siblings.
A) 22
B) 24
C) 26
D) 28
E) 30

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