
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
At Pleasant Park Elementary, students in fourth grade, fifth grade, and sixth grade run an average of $18$, $12$, and $9$ minutes per day, respectively. There are three times as many fourth graders as fifth graders, and the number of sixth graders is equal to the number of fifth graders. Calculate the average number of minutes run per day by these students.

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