
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
Orvin went to the store with enough money to buy 40 balloons at full price. He discovered a revised store promotion: after buying 4 balloons at full price, the next balloon could be purchased at half off. Determine the greatest number of balloons Orvin could buy if he takes full advantage of this offer.

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