
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
Last year, James took 5 science tests and received 5 different scores, each an integer between 71 and 80, inclusive. After each test, he observed that the average of his test scores was an integer. His score on the fifth test was 78. What was his score on the fourth test?

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