
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
John is $15\%$ older than Danielle. Sally is $30\%$ older than Danielle, and Mary is $25\%$ older than Sally. The combined ages of John, Danielle, Sally, and Mary sum up to $80$ years. How old will Mary be on her next birthday?
A) 24  
B) 25  
C) 26  
D) 27  
E) 28

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