
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
Students A and B participated in a Chinese character typing competition. A can type 10 more characters per minute than B. In the same amount of time, A typed 900 characters, and B typed 840 characters. Let x be the number of characters A types per minute. We can derive an equation from this information.

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