
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 5th generation mobile communication technology is abbreviated as 5G. In a certain area, 5G service has been launched. After testing, it was found that the download speed of 5G is 15 times that of 4G. Xiao Ming and Xiao Qiang respectively used 5G and 4G to download a 600-megabyte public welfare film. Xiao Ming was 140 seconds faster than Xiao Qiang. Find the download speeds of 4G and 5G in this area in megabytes per second.

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