
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
Ann and Sue each bought a box of identical stationery. Ann used her box to write some one-page letters and used up all the envelopes, while Sue used her box to write some three-page letters and used up all the paper, leaving 50 envelopes and 50 sheets of paper left. Determine the number of sheets of paper in each box.

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