
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
The ratio of the number of students in grades 10, 11, and 12 of a certain high school is $4:4:5$. Using stratified sampling, a sample of 65 students is to be drawn from these three grades. The number of students to be sampled from grade 10 should be $\boxed{▲}$.

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