
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 quality inspection workshop of a factory has a backlog of products waiting for inspection. At the same time, the assembly line conveyor belt delivers products to be inspected at a certain speed. If one quality inspection machine is turned on, it will take half an hour to complete the inspection of all products waiting for inspection. If two quality inspection machines are turned on at the same time, it will only take ten minutes to complete the inspection of all products waiting for inspection. Now, due to production needs, all products waiting for inspection must be inspected within five minutes. The question is, how many quality inspection machines need to be turned on at the same time at least?

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