
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
Mary can mow a lawn in three hours, and Tom can mow the same lawn in four hours. Mary starts to mow the lawn and works alone for 1 hour before Tom joins her. Together, they continue mowing. How long will it take them to finish mowing the entire lawn from the time Tom joins Mary?

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