
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
A photographer at a maternity hospital takes pictures of all the families picking up the mother and child. A few days later, after producing a set of photographs, the photographer offers the families to purchase the photos for 600 rubles per set. The photographer's costs are 100 rubles per set of photographs, and on average, one out of every four families agrees to buy a set.

What percentage does the photographer's profit constitute relative to his total costs?

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