
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
Harriet is five years younger than Ian. Ian is seven years older than Jack. Grace is twice as old as Jack. Harriet is 18 years old. How many years old is Grace?

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