
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
Chris, David, Eva, and Fiona weigh themselves in pairs. Together, Chris and David weigh 330 pounds, David and Eva weigh 290 pounds, and Eva and Fiona weigh 310 pounds. How many pounds do Chris and Fiona weigh together?

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